Divers, dward <br/><br/>
Evaluation of a combined face ventilation system used with a remotely operated mining machine 
Divers, dward 
 - Washington  Bureau of mines  1982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>VENTILACION DE MINAS
<br/><br/><label>Universal Decimal Class. No.: </label>622.44