Federal metal and nonmetallic mine safety act (oversight).  Hearings, Ninety-second Congress, second session ... 

 - Washington  U.S. Govt. Print. Off.  1972. 
 - iv, 265 p.  24 cm. 
<br/><br/> Hearings held May 15-18 in Washington, D.C., and July 31, 1972 in Kellogg, Idaho. 
<br/><br/><label>LCCN: </label>73600706  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine safety--Law and legislation--United States.
<br/><br/><label>LC Class. No.: </label>KF27  / .E345 1972a 
<br/><br/><label>Dewey Class. No.: </label>344/.73/0465