apes Flashcards
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| 9134889191 | drift | nearly horizontal tunnels access on a hillside | 0 | |
| 9134889192 | slope | diagonally sloping access shafts. | 1 | |
| 9134889193 | shrinkage stope | creating a vertical shaft downward then mining upward on a slope | 2 | |
| 9134889474 | longwall | grinding ore surface away along a wall | 3 | |
| 9134892946 | room and pillar | removing ore from a space underground and leaving columnar pillars to stabilize adjacent | 4 |