19. Ball mill
name: label: Collection Creator
content: Steele, Richard, 1916-1980
setName: label: See more items in
content: Richard Steele Papers
label: See more items in
content: Richard Steele Papers / Series 3: Photographs / Press at work Making Nose Cone Using Ram Process
container: label: Container
content: Box 3
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials