Results 11 - 20 of 40

• A Comparison Between Ignition Behaviours of 7 Different UK and World-Traded Coals in Air, and in a Mixture of Oxygen and Carbon Dioxide Gases Representative of Oxy-Combustion Conditions
  9/1/2009 - Conference papers
  This paper describes the results of testing using a 20L ignition test chamber to test suspensions of 7 UK and world traded coals in air and O2/C02 mixtures typical of oxy-combustion conditions.
• Gas Sorption and Transport in Coals: A Poroelastic Medium Approach
  1/1/2009 - Peer reviewed journal articles
  In this paper, single-component gas sorption and transient diffusion processes are described within coal matrix exhibiting bimodal pore structure.
• Remote Vision System for Dozers on Coal Stockpiles
  9/1/2007 - Conference papers
  NIOSH participated in an experiment to facilitate the remote control of dozers used on coal stockpiles. The normal sensory cues an operator requires to manipulate the dozer from a remote location were supplemented, such as with a vision system.
• Effect of Coal Type and Oxyfuel Combustion Parameters on Pulverised Fuel Ignition
  8/1/2007 - Conference papers
  This paper describes ignition tests on pulverised coal suspensions using a suite of coals of different rank and from different countries of origin and over a range of oxygen and coal concentrations of interest for oxyfuel combustion.
• Noise and Vibration Reduction of a Vibrating Screen
  1/1/2005 - Peer reviewed journal articles
  This paper reports on a cooperative study on vibrating screen noise conducted at a coal preparation plant. Rubber isolators were found to reduce sound levels by 1 dB and amped side plates reduced vibration levels on the screen sides by 1 to 7 dB(A).
• Field-Scale Void Detection in Coal Piles Using Resistivity Imaging
  7/1/2002 - Conference papers
  This paper summarizes the results obtained from a field-scale test and shows that mapping voids within a coal pile is possible.
• The Modified Direct Method: A Solution for Obtaining Accurate Coal Desorption Measurements
  5/1/2001 - Conference papers
  This paper covers the development of NIOSH's modified direct method to measure the gas content of coal samples.
• Suggestion of a Cause-and-Effect Relationship Among Coal Rank, Airborne Dust, and Incidence of Workers' Pneumoconiosis
  11/1/2000 - Peer reviewed journal articles
  Health research studies have identified that the risk of developing and the severity of CWP are directly related to the amount of respirable dust exposure and the coal rank. The Pittsburgh Research Laboratory is pursuing more in-depth studies of coal ch...
• Measuring the Gas Content of Coal: A Review
  2/1/1998 - Peer reviewed journal articles
  Coalbed gas content measurements are commonly used in mine safety as well as coalbed methane resource assessment and recovery applications. Gas content determination techniques generally fall into two categories: (1) direct methods which actually measu...
• Geologic Factors Influencing the Gas Content of Coalbeds in Southwestern Pennsylvania
  1/1/1988 - Reports of Investigations
  A Bureau of Mines geologic study of Pennsylvanian and Permian coalbeds in southwestern Pennsylvania was undertaken to determine the effects of coalbed geology and petrology on in situ coalbed gas contents.