Cost of Mining Reports, Summary cost of coal production
name: label: Collection Author
content: Lehigh Coal and Navigation Company
setName: label: See more items in
content: Lehigh Coal and Navigation Company Records
label: See more items in
content: Lehigh Coal and Navigation Company Records / Series 14: Records of Cost of Coal Mining and Preparation
unitdate: label: Date
content: 1950
container: label: Container
content: Box 45, Folder 3
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials