Safety in the use and maintenance of large mobile surface mining equipment. Proceedings: Bureau of Mines Tech. Transfer Seminars. Tucson, Arizona 

 - Washington, D.C.  U.S. Bureau of Mines  1983 
 - 97 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MANTENIMIENTO<br/>MAQUINARIA MINERA<br/>SEGURIDAD MINERA
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS