Results 31 - 40 of 784

• External L5-S1 Joint Moments When Lifting Wire Mesh Screen Used to Prevent Rock Falls in Underground Mines
  9/1/2009 - Peer reviewed journal articles
  This study uses biomechanical modeling to estimate external moments about L5-S1 for sixteen lifting tasks, using two sizes of wire mesh screens, and presents recommendations to reduce spine loading.
• Forecasting Gob Gas Venthole Production Performances Using Intelligent Computing Methods for Optimum Methane Control in Longwall Coal Mines
  9/1/2009 - Peer reviewed journal articles
  In this paper, the total gas flow rates and methane percentages from 10 GGVs were analyzed. The results showed that the two-hidden layer model predicted total production and the methane content of the GGVs with more than 90% accuracy.
• Stability Mapping to Examine Ground Failure Risk: A Field Study at a Limestone Mine
  7/1/2009 - Conference papers
  This paper presents a description of geologic settings, mining conditions, rockmass characterization with geotechnical risk assessment, analysis, mapping, and control techniques used at an underground stone mine in Central Pennsylvania.
• A Review of Recent Accidents Involving Explosives Transport
  3/1/2009 - Peer reviewed journal articles
  This article is a review of recent accidents involving explosives transport both in the United States and outside of the United States.
• Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
  3/1/2009 - Peer reviewed journal articles
  This study describes the development of an expert classification system used as a decision tool which can be used for degasification system selection using site- and mine-specific conditions.
• Use of Pressure Swing Adsorption Technology to Inert Sealed Mine Areas with Nitrogen
  2/1/2009 - Conference papers
  This paper describes the effort to create a reliable in-mine mobile plant for extracting nitrogen gas from the mine atmosphere. The gas produced by this novel technology can be used to create an inert environment in sealed mine areas.
• Performance Characteristics for Welded Wire Screen Used for Surface Control in Underground Coal Mines
  2/1/2009 - Conference papers
  The load-deformation characteristics and the load capacity of welded wire screen (roof screen) used to control ground fall were evaluated in the laboratory in a specially built test frame.
• Investigation into Dust Exposures and Mining Practices in Mines in the Southern Appalachian Region
  2/1/2009 - Conference papers
  This paper presents the results to date of a NIOSH investigation into the possible causes that would account for the observed higher trends in CWP disease progression through review, data analysis, and in-mine surveying.
• Monitoring and Removal of CO in Blasting Operations
  12/1/2008 - Peer reviewed journal articles
  This paper discusses methods of preventing CO migration, lessening migrated CO, and detecting CO in underground enclosed spaces and may help reduce exposure of area residents to CO and help prevent unnecessary regulations and blasting limitations.
• Pumpable Roof Supports: An Evolution in Longwall Roof Support Technology
  12/1/2008 - Peer reviewed journal articles
  This report examines the development of modern pumpable roof support technology and provides a full description of the performance capabilities of each of the support products now on the market.