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| 21. | layout of workings |
| 采区巷道布置 |
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| 22. | main conveyor roadway |
| 咒送机巷道 |
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| 23. | main workings plan |
| 主要巷道平面图 |
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| 24. | heading chain pillar |
| 巷道煤柱 |
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| 25. | gas drainage roadway |
| 排瓦斯巷道 |
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| 26. | double track haulage roadway |
| 双轨运输巷道 |
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| 27. | inclined stone drift |
| 倾斜岩石巷道 |
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| 28. | heading ventilation |
| 巷道面通风 |
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| 29. | setting-out of center line of workings |
| 巷道中线标定 |
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| 30. | main haulage drift |
| 主要运输巷道 |
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