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| 31. | vertical firing shaft |
| 发射竖井 |
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| 32. | to put down a shaft |
| 开掘竖井 |
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| 33. | prospecting schaft |
| 探竖井 |
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| 34. | opening up by vertical shafts |
| 竖井开拓 |
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| 35. | karst shaft |
| 喀斯特竖井 |
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| 36. | vertical exploratory opening |
| 勘探竖井 |
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| 37. | combustible shaft |
| 可燃竖井 |
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| 38. | underwater shaft |
| 水下竖井 |
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| 39. | ventilating shaft |
| 通风竖井 |
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| 40. | Cheung Sha Shaft |
| 长沙竖井 |
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