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Rock Drills
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| Title: | Rock Drills |
| Author: | Niebergall, Ernst |
| Description: | Until the mid-1940s, rock was loosened with handheld pneumatic drills like this one shown in use at the Castalia quarry of the Wagner Stone Company. |
| Permanent Link: | http://hdl.handle.net/2374.OX/1472 |
| Date: | 19, 1909 |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
| 309.20.u57.jpg | 1.552Mb | JPEG image |
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