Empty conveyances shall be operated up and down shafts at least one round trip before hoisting persons after any shaft or equipment repairs and before regular mantrips are hoisted or lowered.
4 Va. Admin. Code § 25-40-4980
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.