| 21. | After the opencast mine closed, the M1 motorway was constructed over the west of the parish.
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| 22. | A short stretch has now reopened between Thornton and Earlseat to carry coal from the opencast mine.
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| 23. | It at present owns 105 operating mines, of which 81 are underground and 24 are opencast mines.
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| 24. | In 1981, Wirtgen built the first surface miners for opencast mining and routing operations in hard rock.
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| 25. | The opencast mining moved into the fields to the west of the house and continued into the early 1950s.
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| 26. | Because of lignite opencast mining, a section of the course was diverted near Inden-Lamersdorf in 2003.
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| 27. | The site narrowly escaped opencast mining, before Dinefwr Borough Council secured its future by purchasing it from British Coal.
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| 28. | The opencast mines for ironstone, the first being the West Yorkshire Iron and Coal Company in the late 1870s.
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| 29. | At this time, near the city a coal deposit was discovered and Chadan began its development of opencast mining.
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| 30. | The fully motorized Krupp 288 Bucket Wheel Excavator ( as used on large opencast mining ) is complete with auxiliary conveyors.
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