Hanson, Bruce D. <br/><br/>
Cutting parameters affecting the ignition potential of conical bits / 
by Bruce D. Hanson. 
 - [Avondale, Md.] :  U.S. Dept. of the Interior, Bureau of Mines,  1983. 
 - 14 p. :  ill. ;  28 cm. 
 - Report of Investigations / Bureau of Mines ;  8820 .
 - Report of investigations (United States. Bureau of Mines) ;  8820. .
<br/><br/>Bibliography: p. 9. 
<br/><br/><label>LCCN: </label>83600262  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mining machinery--Safety measures.<br/>Bits (Drilling and boring)--Testing.<br/>Mine fires--Prevention and control.
<br/><br/><label>LC Class. No.: </label>TN23  TN345  / .U43 no. 8820 
<br/><br/><label>Dewey Class. No.: </label>622 s  622.23 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23:8820