deep mine उदाहरण वाक्य

उदाहरण वाक्य

1. The coal from Bold Colliery was deep mined and therefore costly to recover.
2. Most of the deep mines ceased operation by 1960.
3. Both surface mines and deep mines occur in the watershed of Spring Run.
4. Many of them specialized in pumping the water out of very deep mining shafts.
5. Later the Cary Salt Works started a 840 ft deep mine south of Winnfield.
6. He worked at the Witwatersrand Deep Mine on the Transvaal Reef for several years.
7. The first deep mine in the parish was Mearns Coalworks which began in 1783.
8. These were in the days before the deep mines appeared penetrating the limestone cap.
9. Limited deep mining resumed under contractors and contract surface mining continued into the 1990s.
10. But coal from deep mines could not be counted on for several more years.