Damaged overcast in No. 1 entry at C face west showing roof of overcast heaved by explosion, 1957-09-23
MLA
United States. Bureau of Mines. "Damaged overcast in No. 1 entry at C face west showing roof of overcast heaved by explosion, 1957-09-23." Georgia State University. Special Collections. 1957-09-23, http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/65993.
APA
United States. Bureau of Mines (1957-09-23). Damaged overcast in No. 1 entry at C face west showing roof of overcast heaved by explosion, 1957-09-23. Retrieved from http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/65993
Chicago
United States. Bureau of Mines. "Damaged overcast in No. 1 entry at C face west showing roof of overcast heaved by explosion, 1957-09-23." 1957-09-23. April 23, 2026. http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/65993.
