| Author: | Westfield, James | 
|---|---|
| Additional Authors: | Brumbaugh, H. C. | 
| Year: | 1950 | 
| Document Type: | N/A | 
| SUDOC: | I 28.27:7563 | 
| Series: | Information circular (United States. Bureau of Mines) | 
| Report Number: | I. C. 7563 | 
| Subjects: | Coal mine accidents -- Illinois. | 
| Carbon dioxide. | |
| Mine fires -- Illinois. | |
| Coal mines and mining -- Illinois -- Safety measures. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc67051/ |