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Showing: 61 to 70 of 2150 matches for "Four Corners Mine"  Page    prev   1   2   3   4   5   6   7   8   9  next TITLE Donut Cribbing--A Hew Heavy-Duty Roof Support Concept  SUMMARY ... as a high quality product which has found increasing acceptance by mine operators ... of cribbings: 5'-0. to 6'-0.. Active support bearing area at four corners: 46x6 ... AUTHOR Chlumecky, Nicholas PUBLISHED 1986 TITLE Record Production Of Industrial Rocks And Minerals In Utah  SUMMARY ... For information on these four commodities refer to Bon and Krahulec (2006) and ... Pit locations are shown on figure 1. Annual mine production figures included in ... AUTHOR Tripp, B. PUBLISHED 2007 TITLE An Investigation Of The Causes Of Roof Falls In A Deep Underground Coal Mine  SUMMARY ... vertically from one or both upper corners of an ... Afinite element model containing four entries and five breaks was ... than the shale roof and the mine working is ... AUTHOR Su, Wen H. PUBLISHED 1984 TITLE The Development of a New High-Energy Absorption Mesh  SUMMARY ... The prototype was transported to an operating underground mine and installed in the back ... of cable and individual lengths are swaged in the four corners of the ... AUTHOR G Giles PUBLISHED 2008 TITLE Essentials For A Preliminary Report On A Small Lode-Gold Mine Or Prospect, With Notes On Sampling  SUMMARY ... effect of different rates of output on the estimated life of the mine and the ... Of :liae _cloth and th.e prooess is repeated, USing all four corners, until the ... AUTHOR Wright, Charles Will PUBLISHED 1933 TITLE Rapid Sealing with Parachute Stoppings  SUMMARY ... Limited to undertake a review of underground coal mine stoppings practices and research activities in Australia and overseas. ... Lidde11 state mine ... AUTHOR Eagleton A C ; Buizen M PUBLISHED 1988 TITLE Use Of Lightweight Foam Concrete For Sealing Abandoned Mine Shafts  SUMMARY ... The shaft had been used to dewater the mine. ... shown in Figure 2, consisted of a steel plate frame suspended by tie-rods near each of the four corners. ... AUTHOR Boreck, D.L. PUBLISHED 1994 TITLE CANOPY - A Computer Program For The Structural Analysis Of Space-Frame Protective Canopies  SUMMARY ... In authorized representat i ve of the Secretary may require in any coal mine where the height of the coalbed permit s that electric ... would be the four corners. ... AUTHOR Sawyer, Stephen Gerard PUBLISHED 1972 TITLE Effects Of Far-Field Shearing Deformation On Fracturing Around An Underground Opening  SUMMARY ... area exca- vated to simulate cross section of corner of mine opening. ... at two opposite corners of a rectangular opening instead of from all four corners. ... AUTHOR Larson, M. K. ; White, B. G. ; Iverson, S. R. TITLE Structural Analysis Of Mine Pillars Using Finite Element Method ? A Case Study  SUMMARY ... The mine was located in Northern West Virginia and extracted coal from the Upper ... coal pillar was split into four stump pillars at the corners, the size ... AUTHOR Tang, D. H. Y. PUBLISHED 1987 Showing: 61 to 70 of 2150 matches for "Four Corners Mine"  Page    prev   1   2   3   4   5   6   7   8   9  next Search Again