§ 33.142. Examination of mines.

 (a)  The mine foreman or some other competent person designated by him shall examine at least once each day all main roads, shafts, slopes, escapements, travelways, and signal apparatus to see that they are in safe and efficient operating condition. The mine superintendent shall be responsible for insuring that such inspection is made.

 (b)  The mine superintendent, or foreman or some other person designated by him shall visit and examine every working place in the mine. This shall be done while the men are or should be at work, at least once every day and more often should individual mine conditions require. He shall insure that every working place is properly secured by props or timbers and that safety in all respects is maintained. He shall further be responsible for insuring that no person is permitted to work in an unsafe place except for the purpose of making it secure. The mine superintendent shall be responsible for insuring that this inspection is made.