square-ups
square-ups [In the process of cutting a raise] The eight holes on the exterior extremeties of the cut determine the ultimate shape of the cavity. Those four in the corner designated by S are known as square-ups. These last sixteen holes mentioned are also filled with powder. JH-25-11-69 Not used Not...
| Format: | Manuscript |
|---|---|
| Language: | English |
| Published: |
1969
|
| Subjects: | |
| Online Access: | http://collections.mun.ca/cdm/ref/collection/elrcdne/id/42209 |
| Summary: | square-ups [In the process of cutting a raise] The eight holes on the exterior extremeties of the cut determine the ultimate shape of the cavity. Those four in the corner designated by S are known as square-ups. These last sixteen holes mentioned are also filled with powder. JH-25-11-69 Not used Not used Withdrawn |
|---|