Continuous mining machine tearing coal from face of coal seam with steel teeth on rotating cutter head, 1974
MLA
National Mine Service Company. "Continuous mining machine tearing coal from face of coal seam with steel teeth on rotating cutter head, 1974." Georgia State University. Special Collections. 1974, http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/101402.
APA
National Mine Service Company (1974). Continuous mining machine tearing coal from face of coal seam with steel teeth on rotating cutter head, 1974. Retrieved from http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/101402
Chicago
National Mine Service Company. "Continuous mining machine tearing coal from face of coal seam with steel teeth on rotating cutter head, 1974." 1974. April 24, 2026. http://digitalcollections.library.gsu.edu/cdm/ref/collection/mhross/id/101402.
