Code of Virginia

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Code of Virginia
Title 45.1. Mines and Mining
Chapter 14.3. Requirements Applicable to Underground Coal Mines
7/25/2021

§ 45.1-161.131. (Repealed effective October 1, 2021) Misfires.

A. Where misfires occur with electric detonators, a waiting period of at least fifteen minutes shall elapse before a miner shall be 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 firing a separate charge at least two feet away from, and parallel to, the misfired charge or by washing the stemming and the charge from the borehole with water, or by inserting and firing a new primer after the stemming has been washed out.

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

D. The handling of a misfired shot shall be directly supervised by the mine foreman or a certified person designated by him.

Code 1950, § 45-53.7; 1954, c. 191; 1966, c. 594, § 45.1-50; 1994, c. 28.

The chapters of the acts of assembly referenced in the historical citation at the end of this section may not constitute a comprehensive list of such chapters and may exclude chapters whose provisions have expired.