Upper Big Branch: "Report of Investigation (Underground Coal Mine Explosion) April 5, 2010: Upper Big Branch Mine South, Performance Coal Company, Montcoal, Raleigh County, West Virginia" by the United States Department of Labor, Mine Safety and Health Administration, Coal Mine Safety and Health, ca. 2011

Upper Big Branch: "Report of Investigation (Underground Coal Mine Explosion) April 5, 2010: Upper Big Branch Mine South, Performance Coal Company, Montcoal, Raleigh County, West Virginia" by the United States Department of Labor, Mine Safety and Health Administration, Coal Mine Safety and Health, ca. 2011, Box: 51a, Folder: 6. J. Davitt McAteer Papers regarding Mining Safety, A&M 4219. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/112078 Accessed December 05, 2025.