alluvial mine造句

例句與造句

1. The alluvial mining communities tended to concentrate in ephemeral canvas camps.
2. Alluvial mining along the range front of the Mongolata goldfield remained largely unsuccessful.
3. Water quality is negatively affected by alluvial mining.
4. At this time it was all alluvial mining, confined to the rivers and creeks.
5. The adjacent Sheep Station Hill has seen only minor scale hard rock and alluvial mining.
6. It's difficult to find alluvial mine in a sentence. 用alluvial mine造句挺難的
7. A number of small scale alluvial mining operations work local " leads " using mechanical diggers.
8. Large scale alluvial mining started in 1926 and hard rock mining and large scale dredging commenced in 1932.
9. Discovered in 2008 at an alluvial mine in South Africa, the 221.81 carat rough diamond.
10. Contrary to the transient development effects of alluvial mining, reef mining led to the development of more stable settlements.
11. The water race is evidence of Chinese alluvial mining in the area and of the construction skills that had been developed.
12. At alluvial mines, they applied their hydraulic mining methods on a vast scale, such as Las Medulas in north-west Spain.
13. Alluvial mining operations commenced immediately, while the open pit mine was constructed over a period of 18 months at a cost of A $ 450 million.
14. The Chinese tended to work not so much as individuals, but in a type of co-operative, utilising a system of open-cast alluvial mining.
15. The place is significant in Queensland's history for illustrating the pattern of Chinese settlement and alluvial mining operations in a rugged and remote area of North Queensland.
16. The "'Star of Sierra Leone "'diamond was discovered by miners on February 14, 1972 in the Diminco alluvial mines in the Koidu area of Sierra Leone.
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