deep mining in a sentence

Examples

1. By 1900, about 5, 000 men worked in the deep mines of George's Creek.
2. These were in the days before the deep mines appeared penetrating the limestone cap.
3. Many of them specialized in pumping the water out of very deep mining shafts.
4. But coal from deep mines could not be counted on for several more years.
5. The watershed of Rausch Creek experienced extensive deep mining in the early 20th century.
6. The first deep mine in the parish was Mearns Coalworks which began in 1783.
7. Later the Cary Salt Works started a 840 ft deep mine south of Winnfield.
8. The last of the NCB deep mines closed in 1965.
9. And they'll be going after the deep mines next ."
10. Limited deep mining resumed under contractors and contract surface mining continued into the 1990s.