MCQOPTIONS
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MCQOPTIONS
| 1. |
A good blast with a good yield is obtained if the cut hole is___________________? |
| A. | normal to face |
| B. | inclined at 45° to the face |
| C. | inclined at 15° to the face |
| D. | inclined at 30° to the face |
| Answer» C. inclined at 15° to the face | |