Author: Eugene Delos GardnerPublisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 124
Book Description
Shaft-sinking Practices and Costs
Author: Eugene Delos GardnerPublisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 124
Book Description
Methods and Costs of Shaft Sinking, U.S. Atomic Energy Commission Project Gnome, Near Carlsbad, New Mexico
Author: Merwin H. HowesPublisher:
ISBN:
Category : Mine ventilation
Languages : en
Pages : 60
Book Description
Gnome shaft, situated about 24 miles southeast of Carlsbad, N. Mex., was designed and sunk by the U.S. Atomic Energy Commission for conducting a peace-time experimental nuclear explosion in the thick salt beds of the Permian Salado formation. Excavation was started July 1, 1960, and completed July 26, 1961. The 10-foot diameter shaft, lined with concrete through the rock section, was sunk 1,216 feet. A drift was driven approximately 1,140 feet on the 1,200-foot level terminating in a shot chamber. On completion of 100 feet of shaft, by means of a truck-mounted crane, facilities were installed for conventional sinking. About 709 feet of rock and 506 feet of salt were encountered in the shaft. Salt beds at this place are reported to be over 1,200 feet thick. The overlying rock section varies greatly in composition and thickness of beds and contains a 28-foot bed of water-bearing dolomite. The aquifer was sealed to facilitate shaft sinking and to prevent water-seepage damage in the salt section of the shaft. Sealing was accomplished by grout injection through holes drilled into the aquifer and by grouting behind the concrete liner
Development of a High Energy Impact Breaker for Shaft Sinking
Author: S. H. E. PhillipsPublisher:
ISBN:
Category : Drilling and boring machinery
Languages : en
Pages : 304
Book Description
Shaft-sinking Methods, Practices, and Costs of the Consolidation Coal Co. at Its No. 261 Mine, Caretta, McDowell County, W. Va
Author: Laurence E. KelleyPublisher:
ISBN:
Category : Mining engineering
Languages : en
Pages : 28
Book Description
Shaft-sinking Methods and Costs, and Cost of Plant and Equipment at the Macassa Mine, Kirkland Lake, Ontario
Author: G. A. HowesPublisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 16
Book Description
Shaft Sinking by Rotary Drilling
Author: Douglas H. PlattPublisher:
ISBN:
Category : Rotary drilling
Languages : en
Pages : 30
Book Description
Describes use of rotary drills to sink shafts at Arkansas bauxite mines. Standard oil-well rotary equipment is used, and the derricks are adapted from a type common in oil fields. It has been found that shafts in circular cross section, lined with streel casing surrounded by a cement sea, have structural advantages superior to those of shafts supported by timber and sheeting. Where formations are loose and water-filled, shaft sinking with a rotary drill is exceptionally practical, economical, and safe.
Practical Shaft Sinking
Author: Francis DonaldsonPublisher:
ISBN:
Category : Mine shafts
Languages : en
Pages : 166
Book Description
Coal Slope and Shaft Sinking Training Program
Author: United States. Mine Safety and Health AdministrationPublisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 160
Book Description
This slope and shaft sinking program is designed to address the unique health and safety problems encountered when constructing a slope or shaft.
Methods and Costs of Shaft Sinking in the Coeur D'Alene District, Shoshone County, Idaho
Author: John R. McWilliamsPublisher:
ISBN:
Category : Mine ventilation
Languages : en
Pages : 60
Book Description
Vertical and Decline Shaft Sinking
Author: Jerzy KickiPublisher: CRC Press
ISBN: 1315683830
Category : Technology & Engineering
Languages : en
Pages : 208
Book Description
Shaft sinking for underground transportation purposes is a very complex technological process in mining and geotechnology which requires specific and specially designed technological equipment. This technological process is dealt with for a long time, since mining is one of the oldest industries in the world.This book presents the te
