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Construction of shafts using shaft boring machines without drill string : Wollers, K Paper to 3rd Australian Tunnelling Conference, Sydney, 12–15 Sept 1978, 6P International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, Volume 16, Issue 3, June 1979, Page 57 [Hidden Content]

[Hidden Content] [Hidden Content] Enhancing diamond drilling performance by the addition of non-ionic polymer to the flushing media Original Research Article Mining Science and Technology (China), Volume 20, Issue 3, May 2010, Pages 400-405 Anupam BHATNAGAR, Manoj KHANDELWAL, Karanam Uma Maheshwar RAO Cost estimation of drilling operations by a Drilling Burr Control Chart and Bayesian statistics Original Research Article Journal of Manufacturing Systems, Volume 20, Issue 2, 2001, Pages 89-97 Jinsoo Kim, David A. Dornfeld ممنون از کمکتون