StacksVerified U.S. regulatory reference

30 CFR §57.19072

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
When combinations of cages and skips are used in the same compartment, the cages shall be enclosed to protect personnel from flying material and the hoist speed reduced to man-speed as defined in standard 57.19061, but not to exceed 1,000 feet per minute. Muck shall not be hoisted with personnel during shift changes.