§ 57.19101 Stopblocks and derail switches.
Positive stopblocks or a derail switch shall be installed on all tracks leading to a shaft collar or landing.
Daily eCFR
§ 57.19101 Stopblocks and derail switches.
30 CFR 57.19101
30 CFR 57.19101
Positive stopblocks or a derail switch shall be installed on all tracks leading to a shaft collar or landing.