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Showing: 1 to 10 of 4260 matches for "underground coal cost per ton"  Page   1   2   3   4   5   6   7   8   9  next TITLE Survey Measures Impact of the Health and Safety Act on Underground Coal Mining  SUMMARY ... This is 19% of the to- tal underground production in ... 1-Changes in Overhead Cost per Ton as Production Decreases from ... from the paper given at the 1971 Coal Show ... AUTHOR Straton, John W. PUBLISHED 1972 TITLE Australia's Top Money-Maker: Coal  SUMMARY ... a seam of about 3 m (10 ft) is about $A12 per ton, reports Martin, noting that it took 22 years-from 19Fj0 to 1972-for the cost of underground coal to double ... PUBLISHED 1977 TITLE Coal Looks Secure For The Seventies  SUMMARY ... mine safety regula- tions have curtailed productivity and spurred cost in- creases ... total increase of $1-$2 pel ton for coal from existing underground mines ... AUTHOR Gordon, Richard L. ; Johnson, Charles J. PUBLISHED 1971 TITLE Coal - Coal Strip Mining-Is It Reaching a Peak?  SUMMARY ... indi- cated all the new mines would be underground. ... 1 - Percentage of US and regional coal output pro- duced ... ton, provides better comparison of cost, for it is ... AUTHOR Risser, Hubert E. PUBLISHED 1970 TITLE Discussions - Of Messrs. Stoek and Harris's Paper on Application of Electricity in the Anthracite Coal-Field of Pennsylvania. with Special Reference to the Wyoming Field (see p. 512)  SUMMARY ... Stoek and Harris as the earliest underground electric plant in ... As com- pared with the cost for the years 1897 ... 6 Colliery of the Susquehauua Coal Co., given in ... PUBLISHED 1904 TITLE Chemically Mining Coal  SUMMARY ... apt to be a sieve for heat losses if the hot gases underground are at ... the inlet gases, this amounts to about $8 per ton of coal for the 95% oxy- gen cost. ... AUTHOR Elliott, Guy R. B. PUBLISHED 1973 TITLE 1975-85 Coal Industry’s Capital Requirements  SUMMARY ... capital, are estimated at $27 per annual ton for underground mines, $30 ... Any single mine would vary considerably in capital cost. ... Table 3-Coal's Capital Demands ... AUTHOR Frawley, John F. PUBLISHED 1975 TITLE Simco-Peabody’s Overland Conveyor Solves Dilemma Caused by Increased Market Demand  SUMMARY ... an estimated cost of 4.499 per ton-mile. Installed by Link-Belt Co. in late 1961, this system transports coal from open pit and underground mining operations ... PUBLISHED 1963 TITLE Primary and Secondary Mining with Auger Equipment  SUMMARY ... operations. There seems to be reason to believe that the cost per ton of highwall-mined coal could be duplicated underground. Entries ... AUTHOR Bondurant, D. M. PUBLISHED 1951 TITLE Papers - Drainage - Arrangements for Handling Mine Water in the Scranton-Olyphant Section of the Northern Anthracite Field (T. P. 1826)  SUMMARY ... volumes, their disposal to the surface or underground, hadto be ... $575,020 is a large sum, the cost per ton 1826 in ... Credit for this goes Hudson Coal Co., Scranton ... AUTHOR Lutz, Walter S. ; Griffith, J. T. PUBLISHED 1947 Showing: 1 to 10 of 4260 matches for "underground coal cost per ton"  Page   1   2   3   4   5   6   7   8   9  next Search Again