Clutch for attaching drill bar to rock drills used in the Hoosac Tunnel
| Title: | Clutch for attaching drill bar to rock drills used in the Hoosac Tunnel |
| Author: | Doane, Thomas. |
| URI: | http://hdl.handle.net/2452/48674 |
| Date: | 1866 |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
| ocn496814223.jpg | 15.55Mb | JPEG image |
|