| 31. | Long drainage adits were dug into one of the hills at Dolaucothi, after opencast mining methods were no longer effective.
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| 32. | In 1972, a section of the line from to Waenavon was relaid by the National Coal Board for opencast mine workings.
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| 33. | Copper, iron ore and tin were mined and crafted in early times, brickworks and opencast mining provided employment in later years.
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| 34. | In response to ecosystem disturbances, some opencast mining sites have utilized earthworms to prepare soil for the return of native flora.
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| 35. | The settlement site was destroyed when around eight million tonnes of coal were extracted by opencast mining between 1982 and 1996.
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| 36. | The fully motorized Krupp 288 Bucket Wheel Excavator ( as used on large opencast mining ) is complete with auxiliary conveyors.
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| 37. | Operated by DBS coal is also supplied from the Tower Opencast mine based at the site of the original Tower Colliery.
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| 38. | The opencast mine that opened in the village in the late 1980s became the biggest mine in Europe by the early 1990s.
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| 39. | It is a working opencast mine located in Arngill Beck on the north-east flank of Close House Crags, in the Lunedale Forest.
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| 40. | The average life of an opencast mine was around 18 months, after which time the land was restored to its former use.
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