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A. All underground active workings and travel ways shall be secured and controlled to protect miners from falls of roof, face or ribs. Loose roof and loose or overhanging ribs and faces shall be taken down or supported. B. The method of mining followed shall not expose miners to hazardous conditions caused by excessive widths of rooms and entries, faulty pillar-recovery methods, or other hazardous mining methods or working conditions. Code 1950, §§ 45-68.1 to 45-68.3; 1954, c. 191; 1966, c. 594, §§ 45.1-40, 45.1-41; 1975, c. 520; 1978, cc. 118, 729; 1980, c. 338; 1982, c. 234; 1984, c. 590; 1988, c. 577; 1994, c. 28 ; 1996, c. 28 ; 1999, c. 28 .
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