Self-contained dry powder chemical systems may be installed to protect main and secondary belt conveyor drives, however, where such systems are employed, they shall be installed and maintained in accordance with the provisions of §§ 75.1101-14 through 75.1101-22.
source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.
cite as: 30 CFR 75.1101-13