Swan, Stephen A. <br/><br/>
Extended bumper designs for large haulage trucks / 
by Stephen A. Swan. 
 - Avondale, MD :  U.S. Dept. of the Interior, Bureau of Mines,  [1987] 
 - 28 p. :  ill. 
 - Bureau of Mines report of investigations ;9089 .
 - Report of investigations (United States. Bureau of Mines) ;  9089 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dump trucks--Bumpers--Design and construction.
<br/><br/><label>LC Class. No.: </label>TN23  TL230  / .U43 
<br/><br/><label>Dewey Class. No.: </label>622 s  629.2/76�19 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23: