                                 CODE OF VIRGINIA

 MISFIRES (§ 45.2-724)

A. Where a misfire occurs with an electric detonator, a waiting period of at
least 15 minutes is required before any miner is allowed to return to the shot
area. After such failure, the blasting cable shall be disconnected from the
source of power and the battery ends short-circuited before electric connections
are examined.

B. Explosives shall be removed by (i) firing a separate charge at least two feet
away from, and parallel to, the misfired charge; (ii) washing the stemming and
the charge from the borehole with water; or (iii) inserting and firing a new
primer after the stemming has been washed out.

C. A careful search of the working place and, if necessary, of the coal after it
reaches the tipple shall be made after blasting a misfired hole to recover any
undetonated explosive.

D. The handling of a misfired shot shall occur under the direct supervision of
the mine foreman or a certified person designated by him.

HISTORY: Code 1950, § 45-53.7; 1954, c. 191; 1966, c. 594, § 45.1-50; 1994, c.
28, § 45.1-161.131; 2021, Sp. Sess. I, c. 387.