Results 71 - 80 of 150

• Methane Control for Underground Coal Mines
  1/1/1994 - Information Circulars
  This paper describes the history and technology of methane drainage in the US and other countries.
• Methane Control in Eastern U.S. Coal Mines : Proceedings of the Symposium of the Bureau of Mines/Industry Technology Transfer Seminar, Morgantown, W. Va., May 30-31, 1973
  1/1/1973 - Information Circulars
  Research workers from the Bureau of Mines and industry met with other government and industry representatives at the Mont Chateau Lodge, Morgantown, West Virginia, on May 30-31, 1973, to discuss the current status of methane control in eastern U.S. coal...
• Methane Control in United States Coal Mines - 1972
  1/1/1973 - Information Circulars
  Presents a brief summary of the explosion trends in United States coal mines for the past 160 years.
• Methane Emission from U.S. Coal Mines in 1973, A Survey: A Supplement to IC 8558
  1/1/1974 - Information Circulars
  This Bureau of Mines survey of methane emissions indicates that total daily emissions have declined from 227 mm ft3 in 1971 to 214.7 mm ft3 in 1973. The highest average daily emissions in million cubic feet per day are detailed by state.
• Methane Emission from U.S. Coal Mines in 1975, A Survey : A Supplement to Information Circulars 8558 and 8659
  1/1/1977 - Information Circulars
  This Bureau of Mines report tabulates methane emissions from U.S. Bituminous coal mines with daily emission rates of at least 100,000 cfd according to states, counties, and coalbeds. Most of the methane emitted is from mines in the Appalachian States. T...
• Methane Emission from U.S. Coal Mines, A Survey
  1/1/1972 - Information Circulars
  This survey was conducted to determine the magnitude of the methane emission and control problem in U.S. bituminous coal mines. The resultant data indicate that the emission rate for any given coalbed depends primarily on the coal production rate and on...
• Methane Emissions from U.S. Coal Mines in 1980
  1/1/1984 - Information Circulars
  A tabulation of methane emissions during 1980 for all United States coal mines with emissions greater than 0.1 MMcfd. The report also compares records of 1975 and 1980 and describes relationships between emissions in 1980 and the Bureau's coalbed gas co...
• Mine Communications: Proceedings: Bureau of Mines Technology Transfer Seminar, Bruceton, Pa, March 21-22, 1973
  1/1/1974 - Information Circulars
  The Technology Transfer Seminar on Mine Communications held on March 21-22, 1973, at the Pittsburgh Mining and Safety Research Center, Bruceton, Pennsylvania, presented information about recently developed equipment, instruments, and techniques for use ...
• Mine Power Systems
  1/1/1990 - Information Circulars
  This U.S. Bureau of Mines publication presents a comprehensive review of mine electrical power-system theory and practice. It discusses fundamental theory and the vital aspects to be considered in planning and designing mine electrical power systems.
• Mine Roof Bolting Machine Safety: Investigation of Roof Bolter Boom Swing Velocity
  2/1/2010 - Information Circulars
  This report describes a study of operator movement relative to the motion of a roof bolting machine boom arm. This work was aimed at reducing the risk of injury to underground coal mine workers from moving machinery.