| 21. | 250th Tunnelling Company also started the deep mine under the German positions at Spanbroekmolen.
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| 22. | The watershed of Rausch Creek experienced extensive deep mining in the early 20th century.
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| 23. | Many business closed as deep mining declined, and increasing numbers of houses stood vacant.
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| 24. | This was combined with a deep mining disaster when one of the local mines collapsed.
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| 25. | In the United Kingdom coal is mined from 3 deep mines and 26 surface mines.
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| 26. | As with many deep mines, compressed air and electricity were supplied from the surface.
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| 27. | And even more in a deep mine?
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| 28. | One deep mine was to be dug five miles ( 8 kms ) from Belvoir Castle.
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| 29. | Deep mines were not required at first so there were a large number of small operations.
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| 30. | Shortly after the flooding, Scottish Coal ( Deep Mine ) Limited, went into receivership.
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