McClelland, John J. <br/><br/>
Investigation of dust sources and control technology for longwall plow operations / 
by John J. McClelland and Robert A. Jankowski. 
 - Avondale, Md. :  U.S. Dept. of the Interior, Bureau of Mines,  1987. 
 - 10 p. :  ill. 
 - Bureau of Mines information circular ; 9173 .
<br/><br/><label>LCCN: </label>55051746 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine dusts.<br/>Longwall mining.
<br/><br/><label>Dewey Class. No.: </label>622.8