1219-0138 Rocis

1219-0138

SUPPORTING STATEMENT
30 CFR 75.350, 75.351, 75.352, 75.371 Safety Standards for Underground Coal
Mine Ventilation - Belt Entry Used as an Intake Air Course to Ventilate
Working Sections And Areas Where Mechanized Mining Equipment Is Being
Installed or Removed.
A.

JUSTIFICATION

1. Explain the circumstances that make the collection of information
necessary. Identify any legal or administrative requirements that
necessitate the collection. Attach a copy of the appropriate section of each
statute and of each regulation mandating or authorizing the collection of
information.
Section 103(h) of the Federal Mine Safety and Health Act of 1977 (Mine Act), 30
U.S.C. § 813, authorizes MSHA to collect information necessary to carryout its
duty in protecting the safety and health of miners
The Safety Standards for Underground Coal Mine Ventilation - Belt Entry rule
provides safety requirements for the use of the conveyor belt entry as a
ventilation intake to course fresh air to working sections and areas where
mechanized mining equipment is being installed or removed in mines with three
or more entries. Currently, 45 underground coal mines employing
approximately 4,100 miners use belt air to ventilate working sections. This rule
is a voluntary standard. If the mine operators choose to use belt air to ventilate
working places, the provisions will maintain the level of safety in underground
mines while allowing them to implement advances in mining atmospheric
monitoring technology. This rule establishes alternate provisions that mine
operators need to follow if they want to use belt air to ventilate working sections.
Section 75.351(b)(3) requires the posting at the surface location of an up-to-date
map or schematic showing air flow directions and the location and type of all
Atmospheric Monitoring System (AMS) sensors. Section 75.351(n)(1) requires
that sensors used to detect CO or smoke be visually examined at least once each
shift, when belts are operated as part of a production shift. If hazardous
conditions are found during the visual exam, then a log of such conditions must
be filed under existing Section 75.363(b) - Hazardous conditions; posting,
correcting and recording (OMB approval 1219-0088).
Sections 75.351(n)(2) and 75.351(n)(3) require that a log be kept of every sevenday alarm test and every 31-day CO, smoke, or methane sensor calibration,
respectively.
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Section 75.351(o)(1)(i) requires that a record be made if the AMS emits an alert or
alarm signal. The record would consist of the date, time, location, and type of
sensor, and the reason for its activation. Section (o)(1)(ii) requires that, if a
malfunction in the system occurs, a record be made of the malfunction and the
corrective action to return the system to proper operating condition. We
(MSHA) believe that such records are useful to the miner, the mine operator, and
the Agency in determining areas of recurring problems. This will aid in ensuring
proper operation of AMSs.
Section 75.351(o)(1)(iii) requires that the persons doing the weekly test of alert
and alarm signals, the monthly calibration, or maintenance of the system make a
record of these tests, calibrations, or maintenance. Section § 75.351(o)(3) requires
that all records concerning the AMS be kept in a book or electronically in a
computer system, that is secure and not susceptible to alteration. Section
75.351(p) requires the mine operator to keep these records for at least one year at
a surface location and to make them available for inspection by authorized
representatives of the Secretary and representatives of miners.
Section 75.351(q) requires that a record of annual AMS operator training be kept.
The record will include the content of training, the person conducting the
training, and the date the training is conducted. The record needs to be
maintained at the mine site by the mine operator for at least one year.
Sections 75.352(a) and 75.352(b) require the designated AMS operator or other
appropriate personnel to take actions promptly when malfunction, alert, or
alarm signals are received. These requirements are parallel to those of Section
75.351(o).
Numerous provisions require action to modify the mine ventilation plan.
Provisions under Section 75.371 Mine Ventilation Plan include: Section 75.371(ii)
requires the locations where dust measurements are made in the belt entry, in
accordance with Section 75.350(b)(3) be included in the mine ventilation plan;
Section 75.371(jj) requires the locations where velocities in the belt entry exceed
limits set forth in Section 75.350(a)(2), and the maximum approved velocity for
each location must be shown in the mine ventilation plan; Section 75.371(kk)
requires the locations where air quantities are measured as set forth in Section
75.350(b)(6) be included in the mine ventilation plan; Section 75.371(ll) requires
the inclusion of point feed locations and their use in the mine ventilation plan;
and Sections 75.371(nn), 75.371(oo), and 75.371(pp) require modification of the
mine ventilation plan to show the length of the time delay or any other method
used for reducing the number of non-fire related alert and alarm signals from CO
sensors, the lower alert and alarm setting for CO sensors, and the alternate
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instrument and the alert and alarm levels associated with the instrument,
respectively.
2. Indicate how, by whom, and for what purpose the information is to be used.
Except for a new collection, indicate the actual use the agency has made of the
information received from the current collection.
The respondents are mine operators that elect to use belt air to ventilate
working sections and areas where mechanized equipment is being installed or
removed. The records will be used by coal mine supervisors and employees,
State mine inspectors, and Federal mine inspectors. The records show that the
examinations and tests were conducted and give insight into the hazardous
conditions that have been encountered and those that may be encountered. The
records of inspections greatly assist those who use them in making decisions that
will ultimately affect the safety and health of miners working in belt air mines.
3. Describe whether, and to what extent, the collection of information involves
the use of automated, electronic, mechanical, or other technological collection
techniques or other forms of information technology, e.g., permitting
electronic submission of responses, and the basis for the decision for adopting
this means of collection. Also describe any consideration of using information
technology to reduce burden.
Mine operators may retain the records either in a secure book that is not
susceptible to alteration, or electronically in a computer system that is secure and
not susceptible to alteration. MSHA encourages operators who store records
electronically to provide a mechanism which will allow the continued storage
and retrieval of records. MSHA currently accepts automatic printing of alert and
alarm signals and automatic storage of some data. No other improved
information technology has been identified that would reduce the burden.
4. Describe efforts to identify duplication. Show specifically why any similar
information already available cannot be used or modified for use for the
purpose(s) described in 2 above.
MSHA knows of no other Federal or State reporting requirements that
duplicate the reporting requirements contained in this section.
5. If the collection of information impacts small businesses or other small
entities (Item 5 of OMB Form 83-I), describe any methods used to minimize
burden.

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This information collection does not have a significant impact on a substantial
number of small entities. However, MSHA has made available on our web-site
various sources of information, such as “Technical Assistance,” “Best Practices,”
and an “Accident Prevention” site. These provide tips and general information
on a number of various topics.
6. Describe the consequence to Federal program or policy activities if the
collection is not conducted or is conducted less frequently, as well as any
technical or legal obstacles to reducing burden.
Reduction of these requirements could result in increased hazards to miners. If
the information collections are not conducted, the consequences could be severe.
A reduction in the frequency of examinations and tests associated with these
information collections could allow unsafe conditions to develop, jeopardizing
the safety of the miners.
7. Explain any special circumstances that would cause an information
collection to be conducted in a manner:
• requiring respondents to report information to the agency more often
than quarterly;
• requiring respondents to prepare a written response to a collection of
information in fewer than 30 days after receipt of it; NA
• requiring respondents to submit more than an original and two copies
of any document;
• requiring respondents to retain records, other than health, medical,
government contract, rant-in-aid, or tax records for more than three
years;
• in connection with a statistical survey, that is not designed to produce
valid and reliable results that can be generalized to the universe of
study;
• requiring the use of a statistical data classification that has not been
reviewed and approved by OMB;
• that includes a pledge of confidentiality that is not supported by
authority established in statute or regulation, that is not supported by
disclosure and data security policies that are consistent with the pledge,
or which unnecessarily impedes sharing of data with other agencies for
compatible confidential use;
or
• requiring respondents to submit proprietary trade secret, or other
confidential information unless the agency can demonstrate that it has
instituted procedures to protect the information's confidentiality to the
extent permitted by law.

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This collection of information is consistent with the guidelines in 5 C.F.R. §
1320.5.
8. If applicable, provide a copy and identify the data and page number of
publication in the Federal Register of the agency's notice, required by 5
CFR 1320.8(d), soliciting comments on the information collection prior to
submission to OMB. Summarize public comments received in response to
that notice and describe actions taken by the agency in response to these
comments. Specifically address comments received on cost and hour
burden.
Describe efforts to consult with persons outside the agency to obtain their
views on the availability of data, frequency of collection, the clarity of
instructions and recordkeeping, disclosure, or reporting format (if any), and
on the data elements to be recorded, disclosed, or reported.
Consultation with representatives of those from whom information is to be
obtained or those who must compile records should occur at least once
every 3 years -- even if the collection of information activity is the same as
in prior periods. There may be circumstances that may preclude
consultation in a specific situation. These circumstances should be
explained.
MSHA published a 60-day preclearance Federal Register notice on March, 15,
2007 ( Volume 72, Number 50, Page 12200), soliciting public comments
regarding the extension of this information collection. No comments were
received.
9. Explain any decision to provide any payment or gift to respondents, other
than remuneration of contractors or grantees.
MSHA will not provide payments or gifts to respondents identified by this
collection.
10. Describe any assurance of confidentiality provided to respondents and the
basis for the assurance in statute, regulation, or agency policy.
There is no assurance of confidentiality provided to respondents. Records are
maintained by the mine operator and reviewed by MSHA inspectors during
routine inspections.
11. Provide additional justification for any questions of a sensitive nature,
such as sexual behavior and attitudes, religious beliefs, and other matters that
are commonly considered private. This justification should include the
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reasons why the agency considers the questions necessary, the specific uses to
be made of the information, the explanation to be given to persons from whom
the information is requested, and any steps to be taken to obtain their consent.
There are no questions of a sensitive nature.
12. Provide estimates of the hour burden of the collection of information. The
statement should:
• Indicate the number of respondents, frequency of response, annual
hour burden, and an explanation of how the burden was estimated.
Unless directed to do so, agencies should not conduct special surveys to
obtain information on which to base hour burden estimates.
Consultation with a sample (fewer than 10) of potential respondents is
desirable. If the hour burden on respondents is expected to vary widely
because of differences in activity, size, or complexity, show the range of
estimated hour burden, and explain the reasons for the variance.
Generally, estimates should not include burden hours for customary
and usual business practices.
• If this request for approval covers more than one form, provide separate
hour burden estimates for each form and aggregate the hour burdens in
Item 13 of OMB Form 83-I.
• Provide estimates of annualized cost to respondents for the hour
burdens for collections of information, identifying and using
appropriate wage rate categories. The cost of contracting out or paying
outside parties for information collection activities should not be
included here. Instead, this cost should be included in Item 13.
The 45 Respondents listed is the number of existing and new mines using “Belt
Air” and/or “Point Feeding”. These calculations are based on actual data
collected from each of the eleven coal districts as of February 2007.
§ 75.351(j) Non-Zero CO Ambient Levels of an AMS
Section 75.351(j) requires approval of the CO ambient levels, and the means to
determine those levels, in the mine ventilation plan.
Since only 50% of mines are expected to establish non-zero CO ambient levels,
the number of affected belt-air operations is only 50% of the 45 mines using belt
air.
MSHA estimates 8 hours of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
8 hours x 22.5 operations = 180 hours
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180 hours x $62.50 = $11,250
§ 75.351(j) Burden for § 75.371(hh) Reporting of Non-Zero CO Ambient Levels
of an AMS
Existing § 75.371(hh) requires reporting (as opposed to justification) within the
mine ventilation plan of the "ambient level in parts per million of carbon
monoxide, and the method for determining the ambient level, in all areas where
carbon monoxide sensors are installed." This provision is impacted by §
75.351(j).
Since only 50% of mines are estimated to have established non-zero CO ambient
levels, the number of affected belt-air operations is only 50% of the 45 mines
using belt air.
MSHA estimates 0.25 hour of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
.25 hours x 22.5 operations = 5.63 hours
5.63 hours x $62.50 = $352
§ 75.351(m) Initial Justification of Time Delay or Other Method Used with an
AMS
Section 75.351(m) permits a mine to incorporate time delays into the AMS, or to
use other methods for reducing non-fire alerts and alarm levels, provided they
are specified and approved in the mine ventilation plan. Permission for such
time delays, or other methods of reducing non-fire alerts and alarms, would be
associated documentation that justifies these changes.
MSHA estimates that only 40% of diesel mines use time delays, and no nondiesel mines would use time delays. Hence, the number of affected belt-air
operations is only a fraction of the 45 mines using belt air.
MSHA estimates 8 hours of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour. MSHA estimates annualized values of
144 burden hours for the 18 mines.
8 hours x 18 operations = 144 hours
144 hours x $62.50 = $9,000
§ 75.351(n)(2) Weekly Testing of an AMS
Section 75.351(n)(2) requires weekly testing of the alarms for an AMS. This
weekly testing is accompanied by a documentation requirement in
§ 75.351(o)(1)(iii).
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MSHA estimates 32.5 hours annually of burden time per affected belt-air mine
annually, depending on mine size. This time is priced at the supervisor's wage
rate of $62.50 per hour.
32.5 hours x 45 operations = 1,426.5 hours
1,426.5 hours x $62.50 = $91,406
§ 75.351(n)(3) Monthly Calibration of an AMS
Section 75.351(n)(3)(i) requires monthly calibration of the CO sensors for an
AMS. This monthly calibration is accompanied by a documentation requirement
in § 75.351(o)(1)(iii).
MSHA estimates 128 hours annually of burden time per affected belt-air mine
annually, depending on mine size. This time is priced at the supervisor's wage
rate of $62.50 per hour.
128 hours x 45 operations = 5,760 hours
5,760 hours x $62.50 = $360,000
§§ 75.351(o)(1)(i) and (o)(1)(ii) Recordkeeping for Alerts, Alarms, and
Malfunctions of an AMS
Section 75.351(o)(1)(i) requires a record of all alerts and alarms of an AMS.
Section 75.351(o)(1)(ii) requires a record of all malfunctions of an AMS.
MSHA estimates 8.33 hours of burden time per affected belt-air mine annually,
depending on mine size. This time is priced at the miner's wage rate of $25.98
per hour.
8.33 hours x 45 operations = 374.85 hours
374.85 hours x $25.98 = $9,739
§ 75.351(o)(1)(iii) Recordkeeping for Testing, Calibration, and Maintenance of
an AMS
Section 75.351(o)(1)(iii) requires a record of all testing, calibration, and
malfunctions of an AMS. These three recordkeeping requirements are analyzed
separately below.
Recordkeeping for Weekly Testing of an AMS
MSHA estimates 1.74 hours annually of burden time per affected belt-air
mine annually, depending on mine size. This time is priced at the supervisor's
wage rate of $62.50 per hour.
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1.74 hours x 45 operations = 78.3 hours
78.3 hours x $62.50 = $4,894
Recordkeeping for Monthly Calibration of an AMS
MSHA estimates 6.4 hours of burden time per affected belt-air mine
annually, depending on mine size. This time is priced at the supervisor's
wage rate of $62.50 per hour.
6.4 hours x 45 operations = 288 hours
288 hours x $62.50 = $18,000
Recordkeeping for Maintenance of an AMS
MSHA estimates 2.4 hours of burden time per affected belt-air mine,
depending on mine size. This time is priced at the supervisor's wage rate
of $62.50 per hour.
2.4 hours x 45 operations = 108 hours
108 hours x $62.50 = $6,750
§ 75.351(q)
Section 75.351(q) requires annual training of all AMS operators in the
proper operation of the AMS, and that a record be kept of such training.
Recordkeeping for Training of AMS Operators
MSHA estimates 0.25 hour of burden time for recordkeeping. This time is
priced at the supervisor's wage rate of $62.50 per hour.
Recordkeeping
.25 x 45 operations = 11.25
11.25 hours x $62.50 = $703
§§ 75.352(a), (b), and (c) Response Procedures for Alerts, Alarms, and
Malfunctions of an AMS
Sections 75.352(a), (b), and (c) require procedures to be followed in
response to all alerts, alarms, and malfunction signals of an AMS. These
procedures are accompanied by a documentation requirement in
§§ 75.351(o)(1)(i) and (ii).
MSHA estimates 15.21 hours of burden time per affected belt-air mine,
depending on mine size. This time is priced at the miner's wage rate of $25.98
per hour.

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15.21 hours x 45 operations = 684.45 hours
684.45 hours x $25.98 = $17,782
§ 75.371(kk) Reporting of Locations Where Air Quantities Are Measured
Section 75.371(kk) requires reporting within the mine ventilation plan of
the “locations where air quantities are measured as set forth in § 75.350(b)(6).”
The burden hours and costs of the initial documenting are shown in Table 13.
The burden hours and costs of the subsequent documenting are shown in Table
14.
MSHA estimates 0.17 hour of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
.17 hours x 45 operations = 7.65
7.65 x $62.50 = $478
§ 75.371(ll) Reporting of Locations and Uses of Point-Feed Regulators
Section 75.371(ll) requires reporting within the mine ventilation plan of
the “locations and use of point-feed regulators, in accordance with §§ 75.350(c)
and 75.350(d)(5).”
MSHA estimates 0.17 hour of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
.17 hours x 45 operations = 7.65
7.65 x $62.50 = $478
§ 75.371(nn) Initial Reporting of Time Delay or Other Method Used with an
AMS
Section 75.371(nn) requires reporting (as opposed to justification) within
the mine ventilation plan of the “length of the time delay or any other method
used for reducing the number of non-fire related alert and alarm signals from
carbon monoxide sensors, in accordance with § 75.351(m).”
MSHA expects that only 40% of diesel mines would use time delays, and
no non-diesel mines would use time delays. Hence, the number of affected beltair operations is only 18 of the 45 mines using belt air.
MSHA estimates 0.25 hour of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
.25 hours x 18 operations = 4.5 hours
4.5 hours x $62.50 = $281
§ 75.371(oo) Initial Reporting of Reduced CO Alert and Alarm Levels of an
AMS
Section 75.371(oo) requires reporting (as opposed to justification) within
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the mine ventilation plan of the “lower alert and alarm settings for carbon
monoxide sensors, § 75.351(m).”
Since only 5% of mines are expected to reduce alert and alarm levels, the
number of affected operations is only 2.25 of the 45 mines using belt air.
MSHA estimates 0.25 hour of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
.25 hours x 2.25 operations = .6 hours
.6 hours x $62.50 = $38
§ 75.371(pp) Initial Reporting of Emergency Detectors for AMS Failure
Section 75.371(pp) requires reporting within the mine ventilation plan of
the “alternate detector and the alert and alarm levels associated with the
detector, § 75.352(e)(7).”
Since only 10% of mines are expected to use smoke detectors that require
substitute hand-held detectors for emergency use , the number of affected beltair operations is only 4.5 of the 45 mines using belt air.
MSHA estimates 0.25 hour of burden time per affected belt-air mine, at a
supervisor's wage rate of $62.50 per hour.
.25 hours x 4.5 operations = 1.13 hours
1.13 hours x $62.50 = $71
Total Burden Hours
Total Burden Hour Cost

=
=

9,083
$531,220

Total Burden Hours and Costs Summarized By Provision
Section

Respondents

Burden Hours

75.351(j)
75.351(j) 75.371(hh)
75.351(m)
75.351(n)(2)
75.351(n)(3)
75.351(o)(1)(i) &
75.351(o)(1)(ii)

22.5
22.5
18
45
45
45

180
6
144
1,426
5,760
375

Burden Hour
Costs
$11,250
$350
$9,000
$91,406
$360,000
$9,739

75.351(o)(1)(iii)
weekly
75.351(o)(1)(iii)
monthly
75.351(o)(1)(iii)

45

78

$4,894

45

288

$18,000

45

108

$6,750

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maintenance
75.351(q)
75.351(a), 75.351(b)
& 75.352(c)
75.371(kk)
75.371(ll)
75.371(nn)
75.371(oo)
75.371(pp)
Total

45
45

11
684

$703
$17,782

45
45
18
2.3
4.5

8
8
5
1
1
9,083

$478
$478
$281
$38
$71
$531,220

//////////

13. Provide an estimate of the total annual cost burden to respondents or
recordkeepers resulting from the collection of information. (Do not include the
cost of any hour burden shown in Items 13 and 15.)
• The cost estimate should be split into two components: (a) a total capital
and start-up cost component (annualized over its expected useful life);
and (b) a total operation and maintenance and purchase of services
component. The estimates should take into account costs associated
with generating, maintaining, and disclosing or providing the
information. Include descriptions of methods used to estimate major
cost factors including system and technology acquisition, expected
useful life of capital equipment, the discount rate(s), and the time
period over which costs will be incurred. Capital and start-up costs
include, among other items, preparations for collecting information
such as purchasing computers and software; monitoring, sampling,
drilling and testing equipment; and record storage facilities.
• If cost estimates are expected to vary widely, agencies should present
ranges of cost burdens and explain the reasons for the variance. The cost
of purchasing or contracting out information collection services should
be a part of this cost burden estimate. In developing cost burden
estimates, agencies may consult with a sample of respondents (fewer
than 10), utilize the 60-day pre-OMB submission public comment
process and use existing economic or regulatory impact analysis
associated with the rulemaking containing the information collection,
as appropriate.
• Generally, estimates should not include purchases of equipment or
services, or portions thereof, made: (1) prior to October 1, 1995, (2) to
achieve regulatory compliance with requirements not associated with
the information collection, (3) for reasons other than to provide
information or keep records for the government, or (4) as part of
customary and usual business or private practices.

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§ 75.351(1)(iii)(3). Record security of tests, calibrations, and maintenance.
Section 75.351(l)(1)(iii)(3) requires safekeeping of records for one year of all
alerts, alarms, malfunctions, maintenance, examination, testing, and calibration
for an AMS.
MSHA estimates $16.38 of materials cost per affected mine, depending on mine
size.
$16.38 cost per mine x 45 mines = $737
75.351(n)(3) Monthly Calibration of an AMS
Section 75.351(n)(3)(i) requires monthly calibration of the CO sensors for an
AMS. This monthly calibration is accompanied by a documentation requirement
in § 75.351(o)(1)(iii). An AMS for a belt-air mine is assumed to have 40 sensors,
depending on mine size, and estimates $1,920 (40 sensors x $48) in annual
material costs per belt-air mine for calibration, depending on mine size.
40 sensors x 45 mines = 1,800 sensors
1,800 sensors x $48 = $86,400
Total Annualized Cost Burden = $87,137
14. Provide estimates of annualized cost to the Federal government. Also,
provide a description of the method used to estimate cost, which should
include quantification of hours, operational expenses (such as equipment,
overhead, printing, and support staff), and any other expense that would not
have been incurred without this collection of information. Agencies also may
aggregate cost estimates from Items 12, 13, and 14 in a single table.
There is no cost to the Federal Government.
15. Explain the reason for any program changes or adjustments reporting
in Items 13 or 14 of the OMB Form 83-I.
Respondents: There has been a decrease of 118 respondents (163 to 45). This
applies to underground coal mines. The amount of mines utilizing belt air was
over estimated previously.
Hours: There has been a decrease of 13,662 hours (22,745 to 9,083).
of mines utilizing belt air was over estimated previously.

The amount

Costs: There has been a decrease of 127K ($214K - $87K). The amount of mines
utilizing belt air was over estimated previously.
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16. For collections of information whose results will be published, outline
plans for tabulation, and publication. Address any complex analytical
techniques that will be used. Provide the time schedule for the entire project,
including beginning and ending dates of the collection of information,
completion of report, publication dates, and other actions.
MSHA does not intend to publish the results of this information collection.
17. If seeking approval to not display the expiration date for OMB approval of
the information collection, explain the reasons that display would be
inappropriate.
MSHA has no forms associated with this collection of information on which to
display an expiration date.
18. Explain each exception to the certification statement identified in Item 19,
"Certification for Paperwork Reduction Act Submission," of OMB 83-I.
There are no certification exceptions identified with this final information
collection.

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B. COLLECTIONS OF INFORMATION EMPLOYING STATISTICAL
METHODS
The agency should be prepared to justify its decision not to use statistical
methods in any case where such methods might reduce burden or improve
accuracy of results. When Item 17 on the Form OMB 83-I is checked “Yes”, the
following documentation should be included in the Supporting Statement to
the extent that it applies to the methods proposed:
1. Describe (including a numerical estimate) the potential respondent
universe and any sampling or other respondent selection method to be used.
Data on the number of entities (e.g., establishments, State and local
government units, households, or persons) in the universe covered by the
collection and in the corresponding sample are to be provided in tabular form
for the universe as a whole and for each of the strata in the proposed sample.
Indicate expected response rates for the collection as a whole. If the collection
had been conducted previously, include the actual response rate achieved
during the last collection.
2.

Describe the procedures for the collection of information including:
. Statistical methodology for stratification and sample selection,
. Estimation procedure,

. Degree of accuracy needed for the purpose described in the
justification,
. Unusual problems requiring specialized sampling procedures, and
. Any use of periodic (less frequent than annual) data collection cycles
to reduce burden.
3.
Describe methods to maximize response rates and to deal with issues of
non-response. The accuracy and reliability of information collected must be
shown to be adequate for intended uses. For collections based on sampling, a
special justification must be provided for any collection that will not yield
“reliable” data that can be generalized to the universe studied.
4.
Describe any tests of procedures or methods to be undertaken. Testing
is encouraged as an effective means of refining collections of information to
minimize burden and improve utility. Tests must be approved if they call for
answers to identical questions from 10 or more respondents. A proposed test

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or set of tests may be submitted for approval separately or in combination
with the main collection of information.
5.
Provide the name and telephone number of individuals consulted on
statistical aspects of the design and the name of the agency unit, contractor(s),
grantee(s), or other persons(s) who will actually collect and/or analyze the
information for the agency.
As statistical analysis is not required by the regulation, questions 1
through 5 do not apply.

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Federal Mine Safety & Health Act of 1977,
Public Law 91-173,
as amended by Public Law 95-164*
An Act
INSPECTIONS, INVESTIGATIONS, AND RECORDKEEPING
SEC. 103. (h) In addition to such records as are specifically required by this Act, every
operator of a coal or other mine shall establish and maintain such records, make such
reports, and provide such information, as the Secretary or the Secretary of Health,
Education, and Welfare may reasonably require from time to time to enable him to
perform his functions under this Act. The Secretary or the Secretary of Health, Education,
and Welfare is authorized to compile, analyze, and publish, either in summary or detailed
form, such reports or information so obtained. Except to the extent otherwise specifically
provided by this Act, all records, information, reports, findings, citations, notices, orders,
or decisions required or issued pursuant to or under this Act may be published from time
to time, may be released to any interested person, and shall be made available for public
inspection.

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[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR75.350]
[Page 494-495]
TITLE 30--MINERAL RESOURCES
CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
PART 75_MANDATORY SAFETY STANDARDS_UNDERGROUND COAL MINES--Table of
Subpart D_Ventilation
Sec. 75.350 Belt air course ventilation.
(a) The belt air course must not be used as a return air course;
and except as provided in paragraph (b) of this section, the belt air
course must not be used to provide air to working sections or to areas
where mechanized mining equipment is being installed or removed.
(1) The belt air course must be separated with permanent
ventilation controls from return air courses and from other intake air
courses except as provided in paragraph (c) of this section.
(2) Air velocities must be compatible with all fire detection
systems and fire suppression systems used in the belt entry.
(b) Air from a belt air course may be used to ventilate a working
section or an area where mechanized mining equipment is being installed
or removed, provided the following additional requirements are met:
(1) The belt entry must be equipped with an AMS that is installed,
operated, examined, and maintained as specified in Sec. 75.351.
(2) All miners must be trained annually in the basic operating
principles of the AMS, including the actions required in the event of
activation of any AMS alert or alarm signal. This training must be
conducted prior to working underground in a mine that uses belt air to
ventilate working sections or areas where mechanized mining equipment
is installed or removed. It must be conducted as part of a miner's 30
CFR part 48 new miner training (Sec. 48.5), experienced miner training
(Sec. 48.6), or annual refresher training (Sec. 48.8).
(3) The average concentration of respirable dust in the belt air
course, an intake air course, must be maintained at or below 1.0 mg/
m\3\. A permanent designated area (DA) for dust measurements must be
established at a point no greater than 50 feet upwind from the section
loading point in the belt entry when the belt air flows over the
loading point or no greater than 50 feet upwind from the point where
belt air is mixed with air from another intake air course near the
loading point.
The DA must be specified and approved in the ventilation plan.
(4) The primary escapeway must be monitored for carbon monoxide or
smoke as specified in Sec. 75.351(f).
(5) The area of the mine with a belt air course must be developed
with three or more entries.
(6) In areas of the mine developed after the effective date of this
rule, unless approved by the district manager, no more than 50% of the
total intake air, delivered to the working section or to areas where
mechanized mining equipment is being installed or removed, can be
supplied from the belt air course. The locations for measuring these
air quantities must be approved in the mine ventilation plan.
(c) Notwithstanding the provisions of Sec. 75.380(g), additional
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intake air may be added to the belt air course through a point-feed
regulator. The location and use of point feeds must be approved in the
mine ventilation plan.
(d) If the air through the point-feed regulator enters a belt air
course which is used to ventilate a working section or an area where
mechanized mining equipment is being installed or removed, the
following conditions must be met:
[[Page 495]]
(1) The air current that will pass through the point-feed regulator
must be monitored for carbon monoxide or smoke at a point within 50
feet upwind of the point-feed regulator;
(2) The air in the belt air course must be monitored for carbon
monoxide or smoke upwind of the point-feed regulator. This sensor must
be in the belt air course within 50 feet of the mixing point where air
flowing through the point-feed regulator mixes with the belt air;
(3) The point-feed regulator must be provided with a means to close
the regulator from the intake air course without requiring a person to
enter the crosscut where the point-feed regulator is located. The
point-feed regulator must also be provided with a means to close the
regulator from a location in the belt air course immediately upwind of
the crosscut containing the point-feed regulator;
(4) A minimum air velocity of 300 feet per minute must be
maintained through the point-feed regulator;
(5) The location(s) and use of a point-feed regulator(s) must be
approved in the mine ventilation plan and shown on the mine ventilation
map; and
(6) An AMS must be installed, operated, examined, and maintained as
specified in Sec. 75.351.
[69 FR 17526, Apr. 2, 2004, as amended at 70 FR 37266, June 29, 2005;
71
FR 12269, Mar. 9, 2006]

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[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR75.351]
[Page 495-498]
TITLE 30--MINERAL RESOURCES
CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
PART 75_MANDATORY SAFETY STANDARDS_UNDERGROUND COAL MINES--Table of
Contents
Subpart D_Ventilation
Sec. 75.351 Atmospheric monitoring systems.
(a) AMS operation. Whenever personnel are underground and an AMS is
used to fulfill the requirements of Sec. Sec. 75.323(d)(1)(ii),
75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f),
the AMS must be operating and a designated AMS operator must be on duty
at a location on the surface of the mine where audible and visual
signals from the AMS must be seen or heard and the AMS operator can
promptly respond to these signals.
(b) Designated surface location and AMS operator. When an AMS is
used to comply with Sec. Sec. 75.323(d)(1)(ii), 75.340(a)(1)(ii),
75.340(a)(2)(ii), 75.350(b), 75.350(d), or 75.362(f), the following
requirements apply:
(1) The mine operator must designate a surface location at the mine
where signals from the AMS will be received and two-way voice
communication is maintained with each working section, with areas where
mechanized mining equipment is being installed or removed, and with
other areas designated in the approved emergency evacuation and
firefighting program of instruction (Sec. 75.1502).
(2) The mine operator must designate an AMS operator to monitor and
promptly respond to all AMS signals.
(3) A map or schematic must be provided at the designated surface
location that shows the locations and type of AMS sensor at each
location, and the intended air flow direction at these locations. This
map or schematic must be updated within 24 hours of any change in this
information.
(4) The names of the designated AMS operators and other appropriate
personnel, including the designated person responsible for initiating
an emergency mine evacuation under Sec. 75.1501, and the method to
contact these persons, must be provided at the designated surface
location.
(c) Minimum operating requirements. AMSs used to comply with
Sec. Sec. 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii),
75.350(b), 75.350(d), or 75.362(f) must:
(1) Automatically provide visual and audible signals at the
designated surface location for any interruption of circuit continuity
and any electrical malfunction of the system. These signals must be of
sufficient magnitude to be seen or heard by the AMS operator.
(2) Automatically provide visual and audible signals at the
designated surface location when the carbon monoxide concentration or
methane concentration at any sensor reaches the alert level as
specified in Sec. 75.351(i). These signals must be of sufficient
magnitude to be seen or heard by the AMS operator.
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(3) Automatically provide visual and audible signals at the
designated surface location distinguishable from alert signals when the
carbon monoxide, smoke, or methane concentration at any sensor reaches
the alarm level as specified in Sec. 75.351(i). These signals must be
of sufficient magnitudeto be seen or heard by the AMS operator.
(4) Automatically provide visual and audible signals at all
affected working sections and at all affected areas where mechanized
mining equipment is being installed or removed when the carbon
monoxide, smoke, or methane concentration at any sensor reaches the
alarm level as specified in Sec. 75.351(i). These signals must be of
sufficient magnitude to be seen or heard by miners working at these
locations.
Methane signals must be distinguishable from other signals.
(5) Automatically provide visual and audible signals at other
locations as specified in Mine Emergency Evacuation and Firefighting
Program of Instruction (Sec. 75.1502) when the carbon monoxide, smoke,
or methane concentration at any sensor reaches the alarm level as
specified in Sec. 75.351(i). These signals must be seen or heard by
miners working at these locations. Methane alarms must be
distinguishable from other signals.
(6) Identify at the designated surface location the operational
status of all sensors.
(7) Automatically provide visual and audible alarm signals at the
designated surface location, at all affected working sections, and at
all affected areas where mechanized mining equipment is being installed
or removed when the carbon monoxide level at any two consecutive
sensors alert at the same time. These signals must be seen or heard by
the AMS operator and miners working at these locations.
(d) Location and installation of AMS sensors. (1) All AMS sensors,
as specified in Sec. Sec. 75.351(e) through 75.351(h), must be located
such that measurements are representative of the mine atmosphere in
these locations.
(2) Carbon monoxide or smoke sensors must be installed near the
center in the upper third of the entry, in a location that does not
expose personnel working on the system to unsafe conditions. Sensors
must not be located in abnormally high areas or in other locations
where air flow patterns do not permit products of combustion to be
carried to the sensors.
(3) Methane sensors must be installed near the center of the entry,
at least 12 inches from the roof, ribs, and floor, in a location that
would not expose personnel working on the system to unsafe conditions.
(e) Location of sensors--belt air course. In addition to the
requirements of paragraph (d) of this section, any AMS used to monitor
belt air courses under Sec. 75.350(b) must have sensors to monitor for
carbon monoxide or smoke at the following locations:
(1) At or near the working section belt tailpiece in the air stream
ventilating the belt entry. In longwall mining systems the sensor must
be located upwind in the belt entry at a distance no greater than 150
feet from the mixing point where intake air is mixed with the belt air
at or near the tailpiece;
(2) Upwind, a distance no greater than 50 feet from the point where
the belt air course is combined with another air course or splits into
multiple air courses;
(3) At intervals not to exceed 1,000 feet along each belt entry in
areas where air velocities are maintained at 50 feet per minute or
higher. In areas along each belt entry where air velocities are less
than 50 feet per minute, the sensor spacing must not exceed 350 feet.
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All sensors must be installed at the 1,000-foot spacing no later than
August 2, 2004.
(4) Not more than 100 feet downwind of each belt drive unit, each
tailpiece transfer point, and each belt take-up. If the belt drive,
tailpiece, and/or take-up for a single transfer point are installed
together in the same air course they may be monitored with one sensor
located not more than 100 feet downwind of the last component; and
(5) At other locations in any entry that is part of the belt air
course as required and specified in the mine ventilation plan.
(f) Locations of sensors--the primary escapeway. When used to
monitor the primary escapeway under Sec. 75.350(b)(4), carbon monoxide
or smoke sensors must be located in the primary escapeway within 500
feet of the working section and areas where mechanized mining equipment
is being installed or removed. In addition, another sensor must be
located within 500 feet inby the beginning of the panel.
The point-feed sensor required by Sec. 75.350(d)(1) may be used as the
sensor at the beginning of the panel if it is located within 500 feet
inby the beginning of the panel.
(g) Location of sensors--return air splits. (1) If used to monitor
return air splits under Sec. 75.362(f), a methane sensor must be
installed in the return air split between the last working place,
longwall or shortwall face ventilated by that air split, and the
junction of the return air split with another air split, seal, or
worked out area.
(2) If used to monitor a return air split under Sec.
75.323(d)(1)(ii), the methane sensors must be installed at the
following locations:
(i) In the return air course opposite the section loading point,
or,if exhausting auxiliary fan(s) are used, in the return air course no
closer than 300 feet downwind from the fan exhaust and at a point
opposite or immediately outby the section loading point; and
(ii) Immediately upwind from the location where the return air
split meets another air split or immediately upwind of the location
where an air split is used to ventilate seals or worked-out areas.
(h) Location of sensors--electrical installations. When monitoring
the intake air ventilating underground transformer stations, battery
charging stations, substations, rectifiers, or water pumps under Sec.
75.340(a)(1)(ii) or Sec. 75.340(a)(2)(ii), at least one sensor must be
installed to monitor the mine atmosphere for carbon monoxide or smoke,
located downwind and not greater than 50 feet from the electrical
installation being monitored.
(i) Establishing alert and alarm levels. An AMS installed in
accordance with the following paragraphs must initiate alert and alarm
signals at the specified levels, as indicated:
(1) For Sec. 75.323(d)(1)(ii) alarm at 1.5% methane.
(2) For Sec. Sec. 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b),
and 75.350(d), alert at 5 ppm carbon monoxide above the ambient level
and alarm at 10 ppm carbon monoxide above the ambient level when carbon
monoxide sensors are used; and alarm at a smoke optical density of .022
per meter when smoke sensors are used. Reduced alert and alarm settings
approved by the district manager may be required for carbon monoxide
sensors identified in the mine ventilation plan, Sec. 75.371(nn).
(3) For Sec. 75.362(f), alert at 1.0% methane and alarm at 1.5%
methane.
(j) Establishing carbon monoxide ambient levels. Carbon monoxide
ambient levels and the means to determine these levels must be approved
in the mine ventilation plan (Sec. 75.371(hh)) for monitors installed
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in accordance with Sec. Sec. 75.340(a)(1)(ii), 75.340(a)(2)(ii),
75.350(b), and 75.350(d).
(k) Installation and maintenance. An AMS installed in accordance
with Sec. Sec. 75.323(d)(1)(ii), 75.340(a)(1)(ii), 75.340(a)(2)(ii),
75.350(b), 75.350(d), or 75.362(f) must be installed and maintained by
personnel trained in the installation and maintenance of the system.
The system must be maintained in proper operating condition.
(l) Sensors. Sensors used to monitor for carbon monoxide, methane,
and smoke must be either of a type listed and installed in accordance
with the recommendations of a nationally recognized testing laboratory
approved by the Secretary; or these sensors must be of a type, and
installed in a manner, approved by the Secretary.
(m) Time delays. When a demonstrated need exists, time delays may
be incorporated into the AMS. These time delays must only be used to
account for non-fire related carbon monoxide alert and alarm sensor
signals. These time delays are limited to no more than three minutes.
The use and length of any time delays, or other techniques or methods
which eliminate or reduce the need for time delays, must be specified
and approved in the mine ventilation plan.
(n) Examination, testing, and calibration. (1) At least once each
shift when belts are operated as part of a production shift, sensors
used to detect carbon monoxide or smoke in accordance with Sec. Sec.
75.350(b), and 75.350(d), and alarms installed in accordance with Sec.
75.350(b) must be visually examined.
(2) At least once every seven days, alarms for AMS installed in
accordance with Sec. Sec. 75.350(b), and 75.350(d) must be
functionally tested for proper operation.
[[Page 498]]
(3) At intervals not to exceed 31 days-(i) Each carbon monoxide sensor installed in accordance with
Sec. Sec. 75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), or 75.350(d)
must be calibrated in accordance with the manufacturer's calibration
specifications. Calibration must be done with a known concentration of
carbon monoxide in air sufficient to activate the alarm;
(ii) Each smoke sensor installed in accordance with Sec. Sec.
75.340(a)(1)(ii), 75.340(a)(2)(ii), 75.350(b), or 75.350(d) must be
functionally tested in accordance with the manufacturer's calibration
specifications;
(iii) Each methane sensor installed in accordance with Sec. Sec.
75.323(d)(1)(ii) or 75.362(f) must be calibrated in accordance with the
manufacturer's calibration specifications. Calibration must be done
with a known concentration of methane in air sufficient to activate an
alarm.
(iv) If the alert or alarm signals will be activated during
calibration of sensors, the AMS operator must be notified prior to and
upon completion of calibration. The AMS operator must notify miners on
affected working sections, areas where mechanized mining equipment is
being installed or removed, or other areas designated in the approved
emergency evacuation and firefighting program of instruction (Sec.
75.1502) when calibration will activate alarms and when calibration is
completed.
(4) Gases used for the testing and calibration of AMS sensors must
be traceable to the National Institute of Standards and Technology
reference standard for the specific gas. When these reference standards
are not available for a specific gas, calibration gases must be
traceable to an analytical standard which is prepared using a method
traceable to the National Institute of Standards and Technology.
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Calibration gases must be within File Typeapplication/pdfFile TitleMicrosoft Word - 1219-0138 ROCIS.docFile Modified2007-06-04File Created2007-06-04