Evaluation of solid-block and cementitious foam seals / 
by N.B. Greninger ... [et al.]. 
 - Washington, D.C. :  U.S. Dept. of the Interior, Bureau of Mines,  1991. 
 - 13 p. :  ill. ;  28 cm. 
 - Report of investigations ;  9382 .
 - Report of investigations (United States. Bureau of Mines) ;  9382. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>91016546  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Concrete stoppings (Mining)--Testing.<br/>Mine explosions--Prevention.
<br/><br/><label>LC Class. No.: </label>TN23  TN313  / .U43 no. 9382 
<br/><br/><label>Dewey Class. No.: </label>622 s  622/.82 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23:9382