|Series||Information circular (United States. Bureau of Mines) -- 7955|
ic / methods and costs of sinking a circular concrete lined ventilation shaft, pb, $ ic / mining methods and costs at crystal-victory and minerva no. 1 fluorspar mines of minerva oil company, hardin county, illinois, $ Filed under: Iron mines and mining -- Michigan -- History -- 20th century The Iron Hunter (Detroit: Wayne State University Press, ), by Chase S. Osborn, contrib. by Robert M. Warner (multiple formats with commentary at Wayne Open). Report issued by the U.S. Bureau of Mines discussing sinking and excavation of large-diameter access shafts. As stated in the introduction, "this information circular describes the application of modern methods and equipment in sinking a vertical, foot-deep by foot-diameter, concrete-lined access shaft for the Harold D. Roberts tunnel near Montezuma, Cited by: 1. The circular shaft has many advantages. It is the most economical to sink, the breaking and removal of ground being more cheaply done. Its shape is better suited for methods of coping with bad ground and other sinking difficulties ; but the sinking equipment may be less convenient for dealing with water if met with at considerable depths.
Current Shaft sinking equipment includes: • Shaft Sinking Headframe to suit m diameter shaft • kW double drum, double clutch, 10m/s kibble winder for shafts up to m deep • Set of 4 stage winders for shafts up to m deep • kW single drum, 4m/s egress winder for shafts up to m deep • Set of 2 stage winders for. This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation. "Cast in place concrete shaft linings have been used in many salt and potash shafts sunk in North America over the last years. A large number of these shafts have exceeded their initial design lives and as producers look to extend the life of their operational assets, maintenance costs and shaft downtime will, in many cases, continue to rise unless . It will be prudent during the design of the shaft lining to check that the connections between segments are adequate to transfer the loads should this occur and the caisson is supported on one side only. Other methods of shaft sinking There are several other methods available for the construction of shafts including diaphragm walls.
Hard Rock Miner’s Handbook Rules of Thumb The attached booklet, Hard Rock Miner’s Hand Book - Rules of Thumb is an extraction of mining Rules of Thumb contained in the Hard Rock Miners Handbook – Edition 3 published by McIntosh Engineering in June The Hard Rock Miner’s Handbook is available in CD format (July ) and hardcopyFile Size: KB. by Gillette. giving methods of construction and actual costs of materials and labor on numerous civil engineering works. A reference book, pages, illustrated, flexible binding, 4% x 7 in. HANDBOOK OF CONSTRUCTION EQUIPMENT. By Richard T. Dana. Gives net prices, shipping weights, capacities, outputs, etc., of all kinds of construction. CONTENTS (continued) Methods for Preventing Radon From Entering the Ventilation Air Sealants Backfilling Bulkheads Mine Pressurization for Radon Control References Appendices A - List of Underground Uranium Mines B - Data for Use in Estimating Risks to Individuals Near Underground Uranium Mines C - Calculations on . The Damen Avenue to Roosevelt Road is a $,, contract consisting of 7, m (25, LF) of m (32 ft) concrete lined rock tunnel and 27 drop shafts varying from m - m (3'6” - 25') in diameter, approximately m ( vertical ft) in depth.