87, Improved Broken Coal Rolls 26 7/8 over points scale 3" to 1 foot
name: label: Collection Creator
content: Coxe Brothers and Company, Inc. (Drifton, Pennsylvania)
label: Collection Collector
content: National Museum of American History (U.S.). Division of History of Technology
label: Collection Collector
content: National Museum of American History (U.S.). Division of Work and Industry
label: Collection Collector
content: National Museum of American History (U.S.). Division of Extractive Industries
setName: label: See more items in
content: Coxe Brothers Collection
label: See more items in
content: Coxe Brothers Collection / Series 6: Drawings / 6.3: Drawings, Breaker Coal Cleaning Processing Equipment (Group 2)
unitdate: label: Date
content: undated
container: label: Container
content: Map-folder 99
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials