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Showing: 1 to 10 of 193 matches for "ic 7900"  Page   1   2   3   4   5   6   7   8   9  next TITLE Methane Control In United States Coal Mines - 1972  SUMMARY Page 1. L I I Bureau of Mines Information Circular/ 1973 Methane Control in United States Coal Mines-1972 UNITED STATES DEPARTMENT OF THE INTERIOR Page 2. ... AUTHOR Zabetakis, M. G. ; Deul, Maurice ; Skow, M. L. PUBLISHED 1972 TITLE Active List Of Permissible Explosives And Blasting Devices Approved Before February 28, 1961 ? Summary  SUMMARY Page 1. IC bureau of mines 808f:3 information circular ACTIVE LIST OF PERMISSIBLE ... lerican A2..... A 179 127 1 7,900 1,200 2,400 400 Do. ... AUTHOR Hanna, N. E. PUBLISHED 1962 TITLE Active List Of Permissible Explosives And Blasting Devices Approved Before July 1, 1970  SUMMARY ... pl ast ic consistency and deSigned although they have prov,;.d sutabIL They are better adapted ... 900 5, 900 6,600 6 , 600 7,200 6,900 9 , 200 7, 500 7,900 9, 500 ... AUTHOR Richardson, P. A. PUBLISHED 1970 TITLE Active List Of Permissible Explosives And Blasting Devices Approved Before December 31, 1972 - Supersedes Information Circular 8493  SUMMARY ... Coa1ite 8-S ••..• 188 121 1 7,900 1,200 2,400 400 Do. ... 7,500 6,200 7,500 7,900 6,900 9,500 9,200 5,900 5,600 7,900 ... AUTHOR Ribovich, J. PUBLISHED 1973 TITLE Active List Of Permissible Explosives And Blasting Devices Approved Before December 1,1967  SUMMARY ... American A•.... 179 127 I 7,900 1,200 2,400 400 Do. American ... Coalite 8-R..... 192 118 1 7,900 l,200 2,400 400 Do. Coalite ... AUTHOR Mason, C. M. PUBLISHED 1968 TITLE Historical Summary Of Coal Mine Explosions In The United States, 1959-81  SUMMARY ... This publication, a sequel to Information Circular 7900 (9) ,5 repre- sents a joint effort by thy Bureau of Mines (BOM) and the Mine Safety and Health ... AUTHOR Richmond, J. K. ; Price, G. C. ; Sapko, M. J. ; Kawenski, E. M. PUBLISHED 1983 TITLE Creating A Safer Environment In U.S. Coal Mines - The Bureau Of Mines Methane Control Program, 1964-79 - Introduction  SUMMARY ... (Sketch from Bureau of Mines Information Circular 7900, Historical Summary of Coal-Mine Explosions in the United States, by H. B. HumphreY-1957, page 79.) 3 ... AUTHOR Skow, Milford L. PUBLISHED 1980 TITLE Mineral Investigation Of The Pyramid Rare II Area (No. 5023), El Dorado County, California ? Summary  SUMMARY ... 1.1 b 1 ic \ . .Ji t h i n form a t ion ... (9,500 ha) of El Dorado National Forest and 7,900 acres (3,200 ha ) of t he Lake Tahoe Basin Management Unit (fi g. 1). ... AUTHOR Scott, Douglas F. PUBLISHED 1982 TITLE Active List Of Permissible Explosives And Blasting Devices Approved Before Jan. 1,1965  SUMMARY ... 124 183 1 7,500 1, 100 2,300 300 00 . American A ..... 179 127 1 7,900 1, 200 2 , 400 400 Do . ... 156 145 1-1/8 7,900 1, 200 2,400 400 Atlos . ... AUTHOR Hanna, N. E. PUBLISHED 1965 TITLE Active List Of Permissible Explosives And Blasting Devices Approved Before Jan. 1, 1965  SUMMARY ... 124 183 1 7,500 1, 100 2,300 300 00 . American A ..... 179 127 1 7,900 1, 200 2 , 400 400 Do . ... 156 145 1-1/8 7,900 1, 200 2,400 400 Atlos . ... AUTHOR Hanna, N. E. PUBLISHED 1965 Showing: 1 to 10 of 193 matches for "ic 7900"  Page   1   2   3   4   5   6   7   8   9  next Search Again