Upper Big Branch: Correspondence from Don Blankenship defending Massey's use of belt air, 2010 June 7, Box: 54, Folder: 35. J. Davitt McAteer Papers regarding Mining Safety, A&M 4219. West Virginia and Regional History Center.
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Upper Big Branch: Correspondence from Don Blankenship defending Massey's use of belt air, 2010 June 7, Box: 54, Folder: 35. 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/112171 Accessed December 05, 2025.