[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR77.2]

[Page 599-601]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 77--MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES--Table of Contents
 
                           Subpart A--General
 
Sec. 77.2  Definitions.

    For the purpose of this part 77, the term:
    (a) Active workings means any place in a coal mine where miners are 
normally required to work or travel;
    (b) American Table of Distances means the current edition of ``The 
American Table of Distances for Storage of Explosives'' published by the 
Institute of Makers of Explosives;

[[Page 600]]

    (c) Barricaded means to obstruct passage of persons, vehicles, or 
flying materials;
    (d) Berm means a pile or mound of material capable of restraining a 
vehicle;
    (e) Blasting agent means any material consisting of a mixture of a 
fuel and oxidizer which--
    (1) Is used or intended for use in blasting;
    (2) Is not classed as an explosive by the Department of 
Transportation;
    (3) Contains no ingredient classed as an explosive by the Department 
of Transportation; and,
    (4) Cannot be detonated by a No. 8 blasting cap when tested as 
recommended in Bureau of Mines Information Circular 8179.
    (f) Blasting area means the area near blasting operations in which 
concussion or flying material can reasonably be expected to cause 
injury.
    (g) Blasting cap means a detonator containing a charge of detonating 
compound, which is ignited by electric current, or the spark of a fuse. 
Used for detonating explosives.
    (h) Blasting circuit means electric circuits used to fire electric 
detonators or to ignite an igniter cord by means of an electric starter.
    (i) Blasting switch means a switch used to connect a power source to 
a blasting circuit.
    (j) Box-type magazine means a small, portable magazine used to store 
limited quantities of explosives or detonators for short periods of time 
in locations at the mine which are convenient to the blasting sites at 
which they will be used.
    (k) Capped fuse means a length of safety fuse to which a detonator 
has been attached.
    (l) Capped primer means a package or cartridge of explosives which 
is specifically designed to transmit detonation to other explosives and 
which contains a detonator.
    (m) Certified or registered, as applied to any person means a person 
certified or registered by the State in which the coal mine is located 
to perform duties prescribed by this Part 77, except that, in a State 
where no program of certification or registration is provided or where 
the program does not meet at least minimum Federal standards established 
by the Secretary, such certification or registration shall be by the 
Secretary.
    (n) Detonating cord or detonating fuse means a flexible cord 
containing a core of high explosive.
    (o) Detonator means a device containing a small detonating charge 
that is used for detonating an explosive, including, but not limited to 
blasting caps, exploders, electric detonators, and delay electric 
blasting caps.
    (p) Electrical grounding means to connect with the ground to make 
the earth part of the circuit.
    (q) Explosive means any chemical compound, mixture, or device, the 
primary or common purpose of which is to function by explosion. 
Explosives include, but are not limited to black powder, dynamite, 
nitroglycerin, fulminate, ammonium nitrate when mixed with a 
hydrocarbon, and other blasting agents.
    (r) Flash point means the minimum temperature at which sufficient 
vapor is released by a liquid or solid to form a flammable vapor-air 
mixture at atmospheric pressure.
    (s) Low voltage means up to and including 660 volts, medium voltage 
means voltages from 661 to 1,000 volts, and high voltage means more than 
1,000 volts.
    (t) Misfire means the complete or partial failure of a blasting 
charge to explode as planned.
    (u) Primer or Booster means a package or cartridge of explosive 
which is designed specifically to transmit detonation to other 
explosives and which does not contain a detonator.
    (v) Qualified person means, as the context requires,
    (1) An individual deemed qualified by the Secretary and designated 
by the operator to make tests and examinations required by this Part 77; 
and,
    (2) An individual deemed, in accordance with the minimum 
requirements to be established by the Secretary, qualified by training, 
education, and experience, to perform electrical work, to maintain 
electrical equipment, and to conduct examinations and make tests of all 
electrical equipment.

[[Page 601]]

    (w) Roll protection means a framework, safety canopy, or similar 
protection for the operator when equipment overturns.
    (x) Safety can means an approved container, of not over 5 gallons 
capacity, having a spring-closing lid and spout cover.
    (y) Safety fuse means a train of powder enclosed in cotton, jute 
yarn, and waterproofing compounds, which burns at a uniform rate; used 
for firing a cap containing the detonating compound which in turn sets 
off the explosive charge.
    (z) Safety switch means a sectionalizing switch that also provides 
shunt protection in blasting circuits between the blasting switch and 
the shot area.
    (aa) Secretary means the Secretary of Labor or his delegate.

[36 FR 9364, May 22, 1971, as amended at 43 FR 12320, Mar. 24, 1978]