6, Jumper or churn drilling by hand
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: 12 1/8 in x 9 1/2 in; 30.7975 cm x 24.13 cm
)
unitdate: label: Date
content: 1947
container: label: Container
content: Box 1, Folder 1
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)