[Federal Register Volume 85, Number 9 (Tuesday, January 14, 2020)]
[Proposed Rules]
[Pages 2064-2069]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-28447]


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DEPARTMENT OF LABOR

Mine Safety and Health Administration

30 CFR Parts 56 and 57

[Docket No. MSHA-2019-0007]
RIN 1219-AB88


Electronic Detonators

AGENCY: Mine Safety and Health Administration, Labor.

ACTION: Proposed rule; request for comments.

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SUMMARY: The Mine Safety and Health Administration (MSHA) is proposing 
to revise certain safety standards for explosives at metal and nonmetal 
(MNM) mines. This proposed rule updates existing provisions consistent 
with technological advancements involving electronic detonators. 
Elsewhere in this issue of the Federal Register, MSHA is also 
publishing a direct final rule because the Agency expects that there 
will be no significant adverse comments on the rule. If no significant 
adverse comments are received, the Agency will confirm the effective 
date of the final rule. If a significant adverse comment is received, 
MSHA will withdraw the direct final rule and proceed with this proposed 
rule. MSHA intends to publish a Federal Register notice announcing the 
Agency's action. This proposed rule and the companion direct final rule 
are substantially identical.

DATES: Comments must be received or postmarked by midnight Eastern 
Standard Time on March 16, 2020.

ADDRESSES: Submit comments and informational materials, identified by 
RIN 1219-AB88 or Docket No. MSHA-2019-0007, by one of the following 
methods listed below:
     Federal E-Rulemaking Portal: http://www.regulations.gov. 
Follow the on-line instructions for submitting comments.
     Email: [email protected].
     Mail: MSHA, Office of Standards, Regulations, and 
Variances, 201 12th Street South, Suite 4E401, Arlington, Virginia 
22202-5452.
     Hand Delivery or Courier: 201 12th Street South, Suite 
4E401, Arlington, Virginia, between 9:00 a.m. and 5:00 p.m. Monday 
through Friday, except Federal holidays. Sign in at the receptionist's 
desk on the 4th Floor East, Suite 4E401.
     Fax: 202-693-9441.
    Instructions: All submissions for the direct final rule must 
include RIN 1219-AB88 or Docket No. MSHA-2019-0007. MSHA posts all 
comments without change, including any personal information provided. 
Access comments electronically on http://www.regulations.gov and on 
MSHA's website at https://www.msha.gov/regulations/rulemaking.
    Docket: For access to the docket to read comments received, go to 
http://www.regulations.gov or http://www.msha.gov/currentcomments.asp. 
To read background documents, go to http://www.regulations.gov. Review 
comments in person at the Office of Standards, Regulations, and 
Variances, 201 12th Street South, Suite 4E401, Arlington, Virginia 
22202-5452. Sign in at the receptionist's desk on the 4th Floor East, 
Suite 4E401.
    Email Notification: To subscribe to receive email notification when 
MSHA publishes rulemaking documents in the Federal Register, go to 
https://public.govdelivery.com/accounts/USDOL/subscriber/new.

FOR FURTHER INFORMATION CONTACT: Sheila A. McConnell, Director, Office 
of Standards, Regulations, and Variances, MSHA, at 
[email protected] (email), 202-693-9440 (voice); or 202-693-
9441 (facsimile). These are not toll-free numbers.

SUPPLEMENTARY INFORMATION:

I. Direct Final Rule

    Concurrent with this proposed rule, MSHA is publishing a separate, 
substantially identical direct final rule in the Final Rules section of 
this Federal Register edition. The concurrent publication of these 
documents will speed notice and comment rulemaking under 30 U.S.C. 811 
and the Administrative Procedure Act (see 5 U.S.C. 553) should the 
Agency decide to withdraw the direct final rule. All interested parties 
who wish to comment should comment at this time because MSHA does not 
anticipate initiating an additional comment period.
    MSHA has determined that notice and public comment are unnecessary 
because the rule imposes no new requirements; it simply clarifies the 
application of MSHA's existing standards to technologies developed 
after the standards were promulgated. If MSHA does not receive 
significant adverse comments on or before February 13, 2020, the Agency 
will publish notification in the Federal Register no later than March 
16, 2020, confirming the effective date of the direct final rule.
    In the event the direct final rule is withdrawn because of 
significant adverse comments, the Agency will proceed with this 
proposed rulemaking by addressing the comments received and publishing 
a final rule. The comment period for this proposed rule runs 
concurrently with that of the direct final rule. Any comments received 
under this proposed rule will be treated as comments regarding the 
direct final rule. Likewise, significant adverse comments submitted to 
the direct final rule will be considered as comments to this proposed 
rule. The Agency will consider such comments in developing a subsequent 
final rule.

II. Background

A. General Discussion

    A detonator is a device containing a detonating charge that is used 
to initiate an explosion reliably, at a specified time, and, as 
applicable, in a prescribed sequence. There are three types of 
detonators primarily used in blasting operations in MNM mines. These 
are non-electric, electric, and electronic detonators. A non-electric 
detonator is designed to initiate explosions without the use of 
electric wires. A non-electric detonator includes devices that use 
detonating cords, shock-tube systems or safety fuse detonators, or a 
combination of these.
    An electric detonator uses electrical currents to initiate 
detonation. Electrical currents from the detonator's lead wires or 
connectors ignite an electric match which in turn ignites a pyrotechnic 
delay element that initiates the base charge. The pyrotechnic delay 
element burns at an approximated rate. The length and composition of 
the pyrotechnic delay element control the approximate rate of burn and 
thus the timing. Since the approximate rate of burn is subject to 
variation, the timing accuracy of electric detonators is affected. 
Electric detonator systems typically include a blasting machine that 
delivers the electrical current to the detonator. Circuit testers, such 
as a blaster's galvanometer, are used to check the continuity and 
resistance of

[[Page 2065]]

the individual detonator and the entire electric circuit.\1\
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    \1\ MSHA considers detonators fired by a shock tube and 
incorporating a pre-programmed microchip delay rather than a 
pyrotechnic one to be electric detonators, not electronic 
detonators.
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    In contrast to electric detonators, electronic detonator systems do 
not have a pyrotechnic delay element. Electronic detonator systems are 
designed to use electronic components to transmit a firing signal with 
validated commands and secure communications to each detonator, and a 
detonator cannot be initiated by other means.
    Typically, each detonator has a microchip to control sequence 
timing and an integrated circuit chip and a capacitor, internal to each 
detonator, to control the initiation time. Electronic detonators enable 
exact time delays between blasts to ensure the blast energy is used to 
break rock, reducing fugitive energy loss in the form of vibrations.
    Unlike non-electric and electric systems, electronic detonators are 
uniquely designed by each manufacturer, which requires that these 
devices be used according to manufacturers' instructions. Because these 
electronic detonator systems require password log-ins, operators must 
authorize persons to initiate the detonations, which minimizes the 
potential for accidental misuse.
    Based on MSHA's experience with the electronic detonator systems it 
has reviewed,\2\ the Agency has found that electronic detonator systems 
have a number of advantages compared to non- electric and electric 
systems, including greater operator control to limit their use to 
authorized personnel, more precise timing, reduced vibrations, and a 
reduced sensitivity to stray electrical currents and radio frequencies.
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    \2\ See https://arlweb.msha.gov/TECHSUPP/ACC/lists/00elecdet.pdf.
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B. Rulemaking Background

    MSHA's existing standards in 30 CFR parts 56 and 57, Subpart E, 
focus on hazards associated with transporting, maintaining, using, or 
working near explosive materials, including detonators.
    Since 1979, MSHA standards have defined detonators to mean any 
device containing a detonating charge that is used to initiate an 
explosive such as electric blasting caps and non-electrical 
instantaneous or delay blasting caps. At the time these standards were 
issued, MSHA believed that the definition provided for the automatic 
inclusion of new detonators as they developed. Metal and Nonmetal Mine 
Safety; New and Revised Definitions and Safety and Health Standards for 
Explosives, 44 FR 48535, 48538 (August 17, 1979).
    On January 18, 1991, MSHA revised the definition of detonators in 
Sec. Sec.  56.6000 and 57.6000 (56 FR 2072) to clarify that the 
definition does not include detonating cords and that the detonators 
may be either ``Class A'' (explosives that include devices that 
constitute a maximum shipping hazard) or ``Class C'' (explosive devices 
that may contain Class A explosives, but in restricted quantities) as 
classified by the Department of Transportation (DOT) in 49 CFR 173.53 
and 173.100.\3\
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    \3\ As MSHA was in the process of publishing this 1991 rule, DOT 
revised its classification requirement at 49 CFR 173.50 and 173.53 
(55 FR 52619) consistent with the United Nations Recommendations on 
the Transport of Dangerous Goods, issued December 21, 1990. Under 
DOT's revisions, Class A explosives were reclassified as ``Division 
1.1 and Division 1.2'' to mean explosives that have a mass explosion 
hazard (explosion would affect the entire load instantaneously) or 
projection hazard (explosion would result in projection of 
fragments). Class C explosives were reclassified as ``Division 1.4'' 
to mean explosives that have a minor explosion hazard (explosive 
effects are confined to the packaging). These revised definitions 
form the current classification system recognized for shipping and 
packaging explosives in the U.S.
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    Since MSHA published these rules, advancements in computer and 
micro-processing technology have led to electronic timing of 
detonations. On September 28, 2004, MSHA issued Program Information 
Bulletin (PIB) No. P04-20, Electronic Detonators and Requirements for 
Shunting and Circuit Testing, to respond to stakeholder inquiries 
concerning how to apply the MSHA requirements for shunting and circuit 
testing to electronic detonators. In PIB No. P04-20, MSHA reported 
results of the Agency's evaluation of two electronic detonator systems. 
MSHA found that the systems contained their own integral elements for 
shunting and circuit testing, which met the Agency's existing standards 
for shunting and circuit testing when used as recommended by the 
manufacturers. Since issuing PIB No. P04-20, MSHA has evaluated several 
other electronic detonator systems and has determined that these 
systems also contain their own integral elements for shunting and 
circuit testing that meet the intended MSHA requirements when these 
systems are used according to the manufacturers' instructions. Existing 
MSHA standards require operators to adhere to manufacturers' 
instructions for all detonation systems, including new systems. See 30 
CFR 56.6308 and 57.6308; 56 FR 2072, 2081.

C. Regulatory Review and Reform

    On February 28, 2008, the Small Business Administration (SBA) 
selected MSHA's explosives standards for regulatory review pursuant to 
its Small Business Regulatory Review and Reform Initiative \4\ which 
was designed to identify existing federal rules that small business 
stakeholders believe should be reviewed and reformed. The MSHA reform 
nomination, discussed in the SBA's February 2008 report, stated that 
MSHA should update its existing explosive standards to be consistent 
with modern mining industry standards. The report further noted 
industry concerns that MSHA's existing standards do not address 
fundamental aspects of explosive safety, such as electronic detonation. 
On July 30, 2008, SBA also testified before the House Subcommittee on 
Regulations, Healthcare, and Trade that SBA's Office of Advocacy had 
met with nominated agencies to discuss the importance of reviewing and 
reforming the identified rules.\5\
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    \4\ SBA, Office of Advocacy, Report on the Regulatory 
Flexibility Act, FY 2007; Annual Report of the Chief Counsel for 
Advocacy on Implementation of the Regulatory Flexibility Act and 
Executive Order 13272, February 2008.
    \5\ Testimony of the Honorable Thomas M. Sullivan Chief, Counsel 
for Advocacy U.S. Small Business Administration, U.S. House of 
Representatives, Committee on Small Business, Subcommittee on 
Regulations, Health Care, and Trade, July 30, 2008.
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    In 2018, the Agency announced its intent to review existing 
regulations to assess compliance costs and reduce regulatory burden. As 
part of this review, MSHA sought stakeholders' assistance in 
identifying those regulations that could be repealed, replaced, or 
modified without reducing miners' safety or health. MSHA published on 
its website, https://www.msha.gov/provide-or-view-comments-msha-regulations-repeal-replace-or-modify, a notice that the Agency is 
seeking assistance in identifying regulations for review. All comments 
are posted on the Agency's website.
    As a result of this solicitation, MSHA received comments from the 
Institute of Makers of Explosives (IME) requesting that MSHA modernize 
its standards to ``properly address'' electronic detonators. IME noted 
that electronic detonators have been used by the industry for over two 
decades and provide a ``sophisticated level of safety and security,'' 
and recommended several regulatory modifications to both coal and MNM 
standards. Specifically, IME proposed changes to Sec. Sec.  56.6000 and 
57.6000, the definition of

[[Page 2066]]

``Detonator;'' 56.6310, Misfire waiting period; 57.6407, Circuit 
testing; 57.6604, Precautions during storms; 75.1310, Explosives and 
blasting equipment; and 77.1303, Explosives, handling and use.
    For this proposed rulemaking, MSHA addresses the use of electronic 
detonators in MNM surface and underground mines and modifies Sec. Sec.  
56.6000 and 57.6000, the definition of ``Detonator;'' 56.6310 and 
57.6310, Misfire waiting period; 56.6407 and 57.6407, Circuit testing; 
and 57.6604, Precautions during storms. MSHA is amending certain 
portions of the explosives standards to include electronic detonators. 
However, the other explosives standards in Subparts E in 30 CFR parts 
56 and 57 continue to apply to electronic detonators.
    For those electronic detonator systems that the Agency has 
reviewed, MSHA agrees with IME that electronic detonators provide a 
working environment that is as safe or safer for miners compared to 
non-electric and electric detonators because they provide for greater 
control of a blast.\6\ MSHA believes that recognizing electronic 
detonator systems as distinct from electric detonators will eliminate 
confusion over certain regulatory requirements. For example, Sec. Sec.  
56.6401 and 57.6401 and Sec. Sec.  56.6407 and 57.6407 require that 
electric detonators be shunted and tested to provide protection against 
premature detonation caused by extraneous current flowing through 
portions of the circuit as they are prepared. Operators use a 
galvanometer or other instrument to test electric circuits to determine 
whether an individual series circuit is continuous, to locate broken 
wires and connections, and to avoid introducing excessive current to 
the circuit. 56 FR 2082-83.
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    \6\ See Program Information Bulletin No. P04-20, Electronic 
Detonators and Requirements for Shunting and Circuit Testing. In 
addition, the U.S. Department of the Interior's Office of Surface 
Mining Reclamation and Enforcement (OSMRE) published a study in 2013 
that concluded that electronic detonators are more accurate and 
precise than the non-electric systems. (Field Testing and Analysis 
of Blasts Utilizing Short Delays with Electronic Detonators (Lusk, 
Silva, and Eltschlager (September 2013)).
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    However, the elect electronic detonator systems that MSHA has 
reviewed contain their own integral elements for shunting and circuit 
testing that exceed the safety protections in MSHA's requirements when 
the systems are used according to the manufacturer's instructions. 
These systems, typically, are designed with an integrated circuit and a 
capacitor system internally wired to each electronic detonator, which 
isolates the base charge from the wires leading to the internal 
capacitors and microchip, making shunting unnecessary.
    In addition, based on MSHA's experience, the Agency has found that 
electronic detonator systems inherently provide more protection than 
MSHA's shunting and circuit testing standards do for electric 
detonators because electronic detonator systems communicate digitally 
to each detonator and are designed to prevent interference from stray 
currents and other electromagnetic interference. Additionally, 
electronic detonators are less likely to be misused because they cannot 
be fired simply by a battery or by other routine electric sources.

III. Section-by-Section Analysis

A. Sections 56.6000 and 57.6000--Definitions

    Under proposed Sec. Sec.  56.6000 and 57.6000, the definition for 
Detonator would be modified by adding the words ``electronic 
detonators,'' before the word ``electric'' in the second sentence of 
the paragraph. Also, in proposed Sec.  56.6000 a comma would be added 
after the word ``caps'' in the second sentence.
    The proposed change to Sec. Sec.  56.6000 and 57.6000, Detonator, 
would modernize the definition by including electronic detonators. The 
proposed addition of a comma in Sec.  56.6000 is for clarity and would 
conform with the definition of Detonator in Sec.  57.6000.

B. Sections 56.6310 and 57.6310--Misfire Waiting Period

    Sections 56.6310 and 57.6310 require that in the event of a misfire 
while blasting, personnel should wait a specific time period based on 
the type of detonator being used before entering the blast area for 
safety.
    Under proposed Sec. Sec.  56.6310 and 57.6310, a new paragraph (c) 
would be added that would require a 30 minute waiting period, or for 
the manufacturer-recommended time, whichever is longer, in the event of 
a misfire while blasting with an electronic detonator.
    MSHA believes that waiting at least 30 minutes before entering a 
blast area if electronic detonators are involved in a misfire provides 
personnel an adequate amount of time to analyze the circumstances of 
the misfire and to develop a plan of action to safely enter the blast 
area. In MSHA's experience, this waiting period is consistent with 
industry-recommended standards.\7\ In the event that an electronic 
detonator manufacturer recommends more than a 30-minute waiting period 
if a misfire occurs using its electronic detonators, MSHA proposes to 
require that persons must follow the manufacturer's recommended wait 
time before entering the blast area. This is consistent with Sec. Sec.  
56.6308 and 57.6308, requiring persons to follow manufacturer's 
instructions for using detonation systems.
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    \7\ Institute of Makers of Explosives, Safety Library 
Publication No. 4, Warnings and Instructions for Consumers in 
Transporting, Storing, Handling, and Using Explosive Materials 
(October 2016).
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C. Sections 56.6407 and 57.6407--Circuit Testing

    Sections 56.6407 and 57.6407 require that blasting circuits be 
tested to ensure the circuits are properly wired. Under proposed Sec.  
56.6407(a) and (c), the words ``or electronic'' would be added to 
paragraphs (a) and (c). In addition, under proposed Sec.  57.6407(a)(3) 
and (b)(2), the words ``or electronic'' would be added to paragraphs 
(a)(3) and (b)(2).
    A blasting galvanometer is used to test electric detonator circuits 
to prevent misfires by determining whether an individual series circuit 
is continuous and by locating broken wires and connections. A blasting 
galvanometer or other appropriate type of testing equipment is used to 
avoid introducing excessive current into the circuit. This differs from 
the electronic detonator systems the Agency has reviewed because these 
systems have a means for circuit testing incorporated into their 
designs. The Agency anticipates that other electronic detonator systems 
MSHA has not reviewed also have integral circuit testing mechanisms. 
While revising the standard would clarify that the circuit-testing 
requirement applies to electronic detonator systems, the Agency 
believes that most or all electronic detonator systems already comply 
with this safety standard. The proposed changes are not intended to 
require that electronic detonator systems with integral circuit testing 
be tested additionally with a galvanometer or other outside mechanism.

D. Section 57.6604(b)--Precautions During Storms

    Under Sec.  57.6604, underground electrical blasting operations 
must be suspended during the approach and progress of an electrical 
storm. Electromagnetic fields and stray currents can be generated from 
lightning. Higher energy levels of electromagnetic interference and 
stray current are generally disruptive or damaging to electronic 
equipment. Based on MSHA's experience with the electronic detonators it 
has examined, electronic detonator systems and technologies generally 
have the base charge isolated from the wires leading to

[[Page 2067]]

the internal capacitors and microchip providing built-in protection 
from interference from electromagnetic fields and stray current. 
However, MSHA is aware that an electromagnetic pulse such as lightning 
strikes traveling through underground mines by paths such as air lines, 
water lines, and conductive ore bodies, can damage all types of 
detonators and equipment and cause misfires. Therefore, under proposed 
Sec.  57.6604(b), the words ``electronic or'' would be added after the 
word ``Underground.''
    The Agency believes that most or all electronic detonator systems 
are designed to minimize or eliminate the possibility that lightning 
could initiate a blast; many systems may not be capable of being 
initiated by lightning. In addition, to the extent these systems are 
capable of being initiated by lightning, MSHA believes that operators 
already have been applying these requirements to electronic detonator 
systems through manufacturers' directions and accepted industry 
practices. MSHA believes the proposed revision will have little or no 
actual impact on operators' existing practices and simply eliminates 
ambiguity in the requirements under Sec.  57.6604(b).

III. Regulatory Economic Analysis

    Executive Orders (E.O.) 12866 and 13563
    Executive Orders 12866 and 13563 direct agencies to assess all 
costs and benefits of available regulatory alternatives and, if 
regulation is necessary, to select regulatory approaches that maximize 
net benefits (including potential economic, environmental, public 
health and safety effects, distributive impacts, and equity). Executive 
Order 13563 emphasizes the importance of quantifying both costs and 
benefits, of reducing costs, of harmonizing rules, and of promoting 
flexibility.
    Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.), 
the Office of Information and Regulatory Affairs designated this 
proposed rule as not a `major rule', as defined by 5 U.S.C. 804(2).
    MSHA has assessed the costs and benefits of the changes and has 
determined that there are no costs associated with this proposed rule. 
Currently, electronic detonators have been used by the mining industry 
for more than 20 years and account for at least 15 percent of the blast 
initiation systems used in the U.S. in all industries.\8\ As part of 
the Agency's regulatory reform efforts, MSHA received comments from 
industry representatives supporting the proposed changes. This proposed 
rule codifies activity already undertaken by the mining industry 
regarding electronic detonators. This proposed rulemaking is a 
deregulatory action under E.O. 13771 in its effects.
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    \8\ U.S. Geological Survey, Minerals Yearbook, Explosive 
Consumption Report (2015-2016).
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    This proposed rule will not increase or decrease the costs or 
benefits associated with the use of electronic detonators; however, 
this action would eliminate ambiguity about detonator options in the 
application of existing requirements so that mine operators would be 
able to use their resources more efficiently when making business 
decisions.
    Among other things, this proposed rule clarifies the 
nonapplicability of certain MSHA standards to electronic detonating 
systems. For example, while the new ``circuit testing'' standard now 
makes clear that the standard contemplates electronic detonating 
systems as well as electric detonators, the preamble clarifies that 
most or all of these electronic systems inherently comply and that, 
therefore, the specific actions operators must take when using electric 
detonators generally need not be taken for electronic detonating 
systems. Likewise, while this proposed rulemaking does not directly 
address MSHA's shunting standards, the preamble clarifies that, while 
those standards require operators to take specific actions when using 
electric detonators, they are not applicable to inherently compliant 
electronic detonating systems. Through these clarifications, MSHA would 
ensure the safety advantages offered by the use of electronic 
detonators are available to mine operators, including greater operator 
control to limit use to authorized personnel, more precise timing, 
reduced vibrations, and a reduced sensitivity to stray electrical 
currents and radio frequencies. Furthermore, consistent with the 
directive in E.O. 13777, this proposed rule would update outdated 
regulations and accommodate technological advances.
    Under E.O. 12866, a significant regulatory action is one meeting 
any of a number of specified conditions, including the following: 
Having an annual effect on the economy of $100 million or more, 
creating a serious inconsistency or interfering with an action of 
another agency, materially altering the budgetary impact of 
entitlements or the rights of entitlement recipients, or raising novel 
legal or policy issues. MSHA has determined that the proposed rule is 
``other significant'' under E.O. 12866.

IV. Feasibility

    MSHA has concluded that the requirements of the proposed rule would 
be both technologically and economically feasible because the proposed 
requirements are already generally accepted industry practices for the 
use of electronic detonators.

V. Regulatory Flexibility Act and Small Business Regulatory Enforcement 
Fairness Act

    Pursuant to the Regulatory Flexibility Act (RFA) of 1980, as 
amended by the Small Business Regulatory Enforcement Fairness Act 
(SBREFA), MSHA has analyzed the compliance cost impact of the proposed 
rule on small entities. Based on that analysis, MSHA certifies that the 
proposed rule would not have a significant economic impact on a 
substantial number of small entities because it does not impose any new 
costs. Therefore, the Agency is not required to develop an initial 
regulatory flexibility analysis.

VI. Paperwork Reduction Act of 1995

    The Paperwork Reduction Act (PRA) provides for the Federal 
government's collection, use, and dissemination of information. The 
goals of the PRA include minimizing paperwork and reporting burdens and 
ensuring the maximum possible utility from the information that is 
collected (44 U.S.C. 3501). There are no information collections 
associated with this proposed rule.

VII. Other Regulatory Considerations

A. The Unfunded Mandates Reform Act Of 1995

    MSHA has reviewed the proposed rule under the Unfunded Mandates 
Reform Act of 1995 (2 U.S.C. 1501 et seq.). MSHA has determined that 
this proposed rule does not include any federal mandate that may result 
in increased expenditures by State, local, or tribal governments; nor 
would it increase private sector expenditures by more than $100 million 
(adjusted for inflation) in any one year or significantly or uniquely 
affect small governments. Accordingly, the Unfunded Mandates Reform Act 
of 1995 requires no further Agency action or analysis. Since the 
proposed rule does not cost over $100 million in any one year, the 
proposed rule is not a major rule under the Unfunded Mandates Reform 
Act of 1995.

[[Page 2068]]

B. Executive Order 13132: Federalism

    The proposed rule does not have ``federalism implications'' because 
it would not ``have substantial direct effects on the States, on the 
relationship between the national government and the States, or on the 
distribution of power and responsibilities among the various levels of 
government.'' Accordingly, under E.O. 13132, no further Agency action 
or analysis is required.

C. Executive Order 12630: Government Actions and Interference With 
Constitutionally Protected Property Rights

    The proposed rule does not implement a policy with takings 
implications. Accordingly, under E.O. 12630, no further Agency action 
or analysis is required.

D. Executive Order 12988: Civil Justice Reform

    The proposed rule was written to provide a clear legal standard for 
affected conduct and was carefully reviewed to eliminate drafting 
errors and ambiguities, so as to minimize litigation and undue burden 
on the Federal court system. Accordingly, the proposed rule meets the 
applicable standards provided in section 3 of E.O. 12988, Civil Justice 
Reform.

E. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This proposed rule does not have ``tribal implications'' because it 
would not ``have substantial direct effects on one or more Indian 
tribes, on the relationship between the Federal government and Indian 
tribes, or on the distribution of power and responsibilities between 
the Federal government and Indian tribes.'' Accordingly, under E.O. 
13175, no further Agency action or analysis is required.

F. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use

    Executive Order 13211 requires agencies to publish a statement of 
energy effects when a rule has a significant energy action that 
adversely affects energy supply, distribution or use. MSHA has reviewed 
this proposed rule for its energy effects because the proposed rule 
applies to the metal and nonmetal mining sector. MSHA has concluded 
that it is not a significant energy action because it is not likely to 
have a significant adverse effect on the supply, distribution, or use 
of energy. Accordingly, under this analysis, no further Agency action 
or analysis is required.

G. Executive Order 13272: Proper Consideration of Small Entities in 
Agency Rulemaking

    MSHA has thoroughly reviewed the proposed rule to assess and take 
appropriate account of its potential impact on small businesses, small 
governmental jurisdictions, and small organizations. MSHA has 
determined and certified that the proposed rule does not have a 
significant economic impact on a substantial number of small entities.

List of Subjects

30 CFR Part 56

    Chemicals, Electric power, Explosives, Fire prevention, Hazardous 
substances, Metals, Mine safety and health.

30 CFR Part 57

    Chemicals, Electric power, Explosives, Fire prevention, Hazardous 
substances, Metals, Mine safety and health.

    For the reasons set out in the preamble, and under the authority of 
the Federal Mine Safety and Health Act of 1977, as amended by the Mine 
Improvement and New Emergency Response Act of 2006, MSHA proposes to 
amend chapter I of title 30 of the Code of Federal Regulations as 
follows:

PART 56--SAFETY AND HEALTH STANDARDS SURFACE METAL AND NONMETAL 
MINES

0
1. The authority citation for part 56 continues to read as follows:

    Authority:  30 U.S.C. 811.

0
2. In Sec.  56.6000, revise the definition for ``Detonator'' to read as 
follows:


Sec.  56.6000   Definitions.

* * * * *
    Detonator. Any device containing a detonating charge used to 
initiate an explosive. These devices include electronic detonators, 
electric or nonelectric instantaneous or delay blasting caps, and delay 
connectors. The term ``detonator'' does not include detonating cord. 
Detonators may be either ``Class A'' detonators or ``Class C'' 
detonators, as classified by the Department of Transportation in 49 CFR 
173.53 and 173.100 which is available at any MSHA Metal and Nonmetal 
Safety and Health district office.
* * * * *
0
3. Amend Sec.  56.6310 by:
0
a. Revising paragraphs (a) and (b); and
0
b. Adding paragraph (c).
    The revisions and addition read as follows:


Sec.  56.6310   Misfire waiting period.

* * * * *
    (a) For 30 minutes if safety fuse and blasting caps are used;
    (b) For 15 minutes if any other type detonators are used; or
    (c) For 30 minutes if electronic detonators are used, or for the 
manufacturer-recommended time, whichever is longer.


Sec.  56.6407   [Amended]

0
4. In Sec.  56.6407 amend paragraphs (a) and (c) by adding the words 
``or electronic'' after the word ``electric''.

PART 57--SAFETY AND HEALTH STANDARDS UNDERGROUND METAL AND NONMETAL 
MINES

0
5. The authority citation for part 57 continues to read as follows:

    Authority:  30 U.S.C. 811.

0
6. In Sec.  57.6000, revise the definition for ``Detonator'' to read as 
follows:


Sec.  57.6000   Definitions.

* * * * *
    Detonator. Any device containing a detonating charge used to 
initiate an explosive. These devices include electronic detonators, 
electric or nonelectric instantaneous or delay blasting caps, and delay 
connectors. The term ``detonator'' does not include detonating cord. 
Detonators may be either ``Class A'' detonators or ``Class C'' 
detonators, as classified by the Department of Transportation in 49 CFR 
173.53 and 173.100 which is available at any MSHA Metal and Nonmetal 
Safety and Health district office.
* * * * *
0
7. Amend Sec.  57.6310 by
0
a. Revising paragraphs (a) and (b); and
0
b. Adding paragraph (c).
    The revisions and addition read as follows:


Sec.  57.6310   Misfire waiting period.

* * * * *
    (a) For 30 minutes if safety fuse and blasting caps are used;
    (b) For 15 minutes if any other type detonators are used; or
    (c) For 30 minutes if electronic detonators are used, or for the 
manufacturer-recommended time, whichever is longer.


Sec.  57.6407   [Amended]

0
8. In Sec.  57.6407 amend paragraphs (a)(3) and (b)(2) by adding the 
words ``or electronic'' after the word ``electric''.

[[Page 2069]]

Sec.  57.6604   [Amended]

0
9. Amend Sec.  57.6604(b) by adding the words ``electronic or'' after 
the word ``Underground''.

David G. Zatezalo,
Assistant Secretary of Labor for Mine Safety and Health Administration.
[FR Doc. 2019-28447 Filed 1-13-20; 8:45 am]
 BILLING CODE 4520-43-P