30 CFR 57.19130 - Conveyance shaft test.
Before hoisting persons and to assure that the hoisting compartments are clear of obstructions, empty hoist conveyances shall be operated at least one round trip after—
(a) Any hoist or shaft repairs or related equipment repairs that might restrict or obstruct conveyance clearance;
(b) Any oversize or overweight material or equipment trips that might restrict or obstruct conveyance clearance;
Title 30 published on 2014-07-01
no entries appear in the Federal Register after this date.