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| 51. | digger lift shaft |
| 挖掘铲|提升机 |
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| 52. | tunnel boring works |
| 隧道挖掘工程 |
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| 53. | excavation without timbering |
| 无支撑挖掘 |
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| 54. | excavating and loading teeth |
| 挖掘装载齿 |
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| 55. | potato raising plough |
| 马铃薯挖掘犁 |
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| 56. | grab type dredge |
| 抓斗挖掘船 |
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| 57. | excavation plan |
| 挖掘工程计划 |
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| 58. | d and gravel dredge(r) |
| 砂石挖掘船 |
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| 59. | visit the excavations |
| 参观挖掘现场. |
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| 60. | trench excavation |
| 挖掘喉坑 |
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