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Results 11 - 20 of 54
11/1/2009 - Conference papersFor horizontal vibrating screens, NIOSH testing indicates that the screen sides and feed box are dominant noise sources for the 250 Hz through 800 Hz one-third octave bands, while the electric motor is the most significant source for the 1 kHz band.
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 Conditions9/1/2009 - Conference papersThis 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.
8/1/2009 - Peer reviewed journal articlesNIOSH conducted a statistical study of available data regarding frictional ignitions in the United States from 1983 to 2005 to determine and define conditions controlling their occurrence.
1/1/2009 - Peer reviewed journal articlesIn this paper, single-component gas sorption and transient diffusion processes are described within coal matrix exhibiting bimodal pore structure.
9/1/2007 - Conference papersNIOSH 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.
8/1/2007 - Conference papersThis 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.
8/1/2006 - Conference papersNIOSH and MSHA conducted joint research on dust explosions by studying post-explosion dust samples of high and low volatile bituminous coals collected from full-scale explosions at NIOSH's Lake Lynn Experimental Mine and from laboratory explosions.
1/1/2005 - Peer reviewed journal articlesThis 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).
7/1/2002 - Conference papersThis paper summarizes the results obtained from a field-scale test and shows that mapping voids within a coal pile is possible.
6/1/2002 - Peer reviewed journal articlesThe amount of airborne respirable dust generated from breakage of different coals varies widely. This research was conducted to identify the facets of airborne respirable dust liberation from the coal product.