Results 1 - 10 of 17

• Guidelines for the Prediction and Control of Methane Emissions on Longwalls
  3/1/2008 - Information Circulars, Safety guidelines, tips, and checklists
  In this report, several practical guidelines are recommended for controlling longwall coalbed methane. All predictions are based on determinations made for the Pittsburgh Coalbed in southwestern Pennsylvania.
• 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.
• Explosion Hazards From Methane Emissions Related to Geologic Features in Coal Mines
  4/1/2008 - Information Circulars
  This report presents a historical framework detailing the impact of geologic features on excess gas emissions and resultant mine explosions.
• Handbook for Methane Control in Mining
  6/1/2006 - Information Circulars
  This handbook describes effective methods for the control of methane gas in mines and tunnels. It assumes the reader is familiar with mining.
• Proposal for Certification Tests and Standards for Closed-Circuit Breathing Apparatus
  8/1/1999 - Information Circulars
  In this report, recommendations are made to (1) replace the present regulations for certification of closed-circuit breathing apparatus with quantitative tests specifying metabolic work rate rather than activity, (2) continuously monitor relevant physio...
• Smoke, Carbon Monoxide, and Hydrogen Chloride Production from the Pyrolysis of Conveyor Belting and Brattice Cloth
  1/1/1992 - Information Circulars
  An investigation of the combustion products of typical materials found in underground mines. The results are combined with previous analyses to estimate relative toxicities, product levels and detectability of smoldering mine combustibles.
• Summary of Combustion Products from Mine Materials: Their Relevance to Mine Fire Detection
  1/1/1990 - Information Circulars
  The U.S. Bureau of Mines evaluated product-of-combustion characteristics of combustible materials used in coal mining in experiments conducted in an intermediate-scale fire tunnel, and evaluated each material's effectiveness for mine fire detection.
• A Review of the Mechanisms of Gas Outbursts in Coal
  1/1/1987 - Information Circulars
  Outbursts are sudden and violent releases of gas and coal that result from a complex function of geology, stress regime, and gas pressure and content. The Bureau of Mines has reviewed methods for prediction and mitigation of such outbursts in use worldw...
• Evaluating Ventilation Parameters of Three Coal Mine Gobs
  1/1/1986 - Information Circulars
  The Bureau of Mines used sulfur hexafluoride (sf6) tracer gas to evaluate the effectiveness of gob ventilation and/or sealing practices at three coal mines, each having different problems associated with their mined-out areas.
• Short-Delay Blasting in Underground Coal Mines
  1/1/1986 - Information Circulars
  Research was conducted to determine whether the total elapsed delay time for blasting bituminous coal in underground coal mines could be safely expanded beyond the 500-ms limitation without igniting a methane or methane-coal dust atmosphere.