Hansen, J. S. <br/><br/>
Erosion testing of potential valve materials for coal gasification systems 
by J. S. Hansen, J. E. Kelley, and F. W. Wood. 
 - [Washington]  Dept. of the Interior, Bureau of Mines  1979. 
 - 26 p.  ill.  27 cm. 
 - Report of investigations - Bureau of Mines ; 8335 .
 - United States  Bureau of Mines.  Report of investigations -Bureau of Mines  8335. .
<br/><br/>Bibliography: p. 14-15. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal gasification<br/>Valves--Testing.