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WITS SPECIAL EDITION - VOLUME I . A review of rock cutting for underground mining: past, present, and future . D. Vogt. Centre for Mechanised Mining Systems, University of the Witwatersrand Johannesburg, South Africa
A Tribute to Philip Healey, the Mines Rescue Brigade and coal miners everywhere
EM 1110-2-2901 Tunnels and Shafts in Rock - Ebook download as PDF File (.pdf), Text File (.txt) or read book online.