Lucas, Harry G. <br/><br/>
Multiple-orifice feeder for fine particles 
Lucas, Harry G.; Smith, N. S. Jr. 
 - Washington  Bureau of mines  1974 
 - 5 p. 
 - RI 7944 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>MINING
<br/><br/><label>Subjects--Index Terms: </label>MAQUINAS DE MINERIA DE CARBON MINA DE POLVOS COAL-MINING MACHINERY MINE DUSTS 
<br/><br/><label>Universal Decimal Class. No.: </label>622