A. No person shall work or travel under unsupported roof except to install temporary supports in accordance with the approved roof control plan. Areas inby the breaker line where second mining has been or is being conducted shall be considered unsupported.
B. If roof, face, or rib conditions are found to be unsafe, no person shall start any other work until the conditions have been corrected by taking down loose material or securely supporting the roof, face, or ribs.
C. A bar of proper length shall be used to pull down any loose material discovered.
Code 1950, §§ 45-61, 45-68.1, 45-68.3; 1954, c. 191; 1966, c. 594, §§ 45.1-41, 45.1-42; 1975, c. 520; 1976, c. 598; 1978, c. 118; 1980, c. 338; 1982, c. 234; 1988, c. 577; 1994, c. 28; 1999, c. 256; 2005, c. 3.