| 41. | An open pit mine began operation in 1882, and moved to underground mining by 1900.
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| 42. | Its tributary open-pit mining.
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| 43. | Maintenance is by the open-pit mine of the " Artyomugol Association ".
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| 44. | The workings include a very large open pit mine, an underground mine and four concentrators.
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| 45. | Jwaneng is an open pit mine.
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| 46. | In 1904, Jackling recommended open pit mining, using steam shovels to load railroad cars.
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| 47. | Open pit mining ended in 1976 when the pit reached a final depth of 300 m.
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| 48. | The mine has been in operation since 1983 and uses conventional open-pit mining methods.
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| 49. | Mining started at the open-pit mine in 1892 after the construction of a railway.
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| 50. | Government media reports indicate that the iron ore will be extracted using open-pit mining.
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