KRS 352.260: Shotfirers -- Solid blasting.

(1) Any operator of a mine shall designate only certified persons as shotfirers to prepare

the cartridge and set off and discharge the shots.

(2) Shotfirers shall at all times be under the direction of a certified mine foreman.

(3) The following conditions apply when shooting coal from the solid:

(a) All licensees engaged in shooting coal from the solid shall submit an

application for a permit to the commissioner on a form prescribed by the

department.

(b) Before said permit is issued by the commissioner he sha ll have an

investigation conducted of the mine to determine the adequacy of the

proposed solid blasting plan in complying with KRS Chapter 351 and this

chapter and administrative regulations applicable to blasting coal in an

underground mine.

(c) The mine inspector shall have the authority to stop production at the mine by

the issuance of a closure order to any operator who fails to obtain a permit

when shooting coal from the solid.

(4) When using the method of solid blasting, no more than one (1) face shall be charged

or detonated simultaneously.

(5) When shooting coal from the solid, not more than two (2) adjacent openers or cut

holes shall be primed with detonators having the same delay period. The nominal

delay intervals between the succeeding rows of ho rizons shall not be less than fifty

(50) milliseconds nor more than one hundred (100) milliseconds.