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- [6] ROOF BOLTING EFFECTIVENESS AT MICHEL CANADIAN MINING AND METALLURGICAL BULLETIN, 1967, 60 (659): : 297 - &
- [8] INVESTIGATION OF ROOF BOLTING EFFECTIVENESS CANADIAN MINING AND METALLURGICAL BULLETIN, 1966, 59 (647): : 275 - &
- [9] DESIGN FOR BOLTING STRATIFIED ROOF TRANSACTIONS OF THE SOCIETY OF MINING ENGINEERS OF AIME, 1964, 229 (02): : 113 - 119