9, Self-rotated air stopehammers
name: label: Collection Artist
content: Batchelor, Lawrence Robe, 1887-1961
setName: label: See more items in
content: L. R. Batchelor Rock Drill Drawings
label: See more items in
content: L. R. Batchelor Rock Drill Drawings / Series 1: Drawings
physdesc: label: Extent
content: 1 Drawings (visual works) (overall: 17 1/4 in x 12 3/4 in; 43.815 cm x 32.385 cm
)
unitdate: label: Date
content: 1947
container: label: Container
content: Box 1, Folder 2
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Graphic Materials
label: Type
content: Drawings (visual works)