Ground subsidence and structural damage over an abandoned room-and-pillar coal mine at Hegeler, IL 
by Gennaro G. Marino ... [et al.] 
 - Pgh. [i.e. Pittsburgh] Pa  U.S. Dept. of the Interior, Bureau of Mines  1986 
 - 24 p.  ill  28 cm. 
 - Information circular  9072 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subsidences (Earth movements)--Illinois--Hegeler<br/>Coal mines and mining--Illinois--Hegeler<br/>Mine subsidences--Illinois--Hegeler<br/>Earth movements and building--Illinois--Hegeler
<br/><br/><label>Dewey Class. No.: </label>622 s 363.3  / 497