Results 21 - 30 of 31

• The Use of Nitrogen-Enhanced Foam at the Pinnacle Mine Fire
  6/1/2005 - Conference papers
  This paper evaluates the effectiveness of remotely applied nitrogen-enhanced foam to aid in efforts to isolate and suppress a mine fire.
• Field Method for the Determination of Insoluble or Total Hexavalent Chromium in Workplace Air
  9/1/2004 - Peer reviewed journal articles
  National Institute for Occupational Safety and Health method 7703 is a portable field procedure for the analysis of workplace air filter samples for hexavalent chromium (CrVI) content immediately after the samples are collected. The field method prescri...
• Inaccuracy of Area Sampling for Measuring the Dust Exposure of Mining Machine Operators in Coal Mines
  2/1/2002 - Peer reviewed journal articles
  This study examines the accuracy of area sampling for measuring the dust exposure of mining machine operators at coal mine working faces. The work was prompted by the development of a prospective new type of dust sampling instrument called the machine-...
• Historical Perspective of Personal Dust Sampling in Coal Mines
  1/1/2002 - Conference papers
  This paper examines the development of dust sampling methods in U.S. coal mines, with emphasis on the benefits of personal sampling and on recent developments that permit real-time assessment of dust exposure.
• Test Report on the Machine-Mounted Continuous Respirable Dust Monitor
  6/1/2001 - Conference papers
  The machine-mounted continuous respirable dust monitor (MMCRDM) is a fixed-location area sampling device developed for possible use at the working face of an underground coal mine. decades. Recently, an extensive series of laboratory and underground tes...
• Detection and Control of Spontaneous Heating in Coal Mine Pillars-A Case Study
  1/1/1995 - Reports of Investigations
  This U.S. Bureau of Mines study examined spontaneous heating episodes in coal mine pillars in an active underground coal mine. The objective of this study was to discover if the location of future events of pillar spontaneous heating could be inferred ...
• Cause of Floor Self-Heatings in an Underground Coal Mine
  1/1/1992 - Reports of Investigations
  This report presents a Bureau of Mines study to identify the causes of self-heating events beneath the floor of a deep underground coal mine. The combined results led to the conclusion that pyrite oxidation was the prime cause of the heatings.
• Rapid Sampling of Products During Coal Mine Explosions
  2/1/1991 - Peer reviewed journal articles
  This paper describes a U.S. Bureau of Mines investigation of large-scale coal dust explosions in an experimental mine using a high-speed electropneumatic mechanism for rapid grab-sampling of gases and dusts and shows the benefits of the technique.
• Silicone Vapor Poisoning of Catalytic Methane Sensors
  10/1/1978 - Conference papers
  Various silicone materials have been proposed for use in mining environments. The catalytic methane sensors now employed are poisoned by silicone vapors. Activated charcoal and carbon cloth adsorbents will increase the sensor lifetimes in an environment...
• Gas-Sampling Capability of Vacutainers
  1/1/1978 - Reports of Investigations
  Tests were conducted to study shelf life of evacuated vacutainer samplers prior to sampling and also to check the stability of sampled gases prior to analysis.