| 31. | The Rabbit Lake deposit was discovered in 1968 and production started in 1975 using open-pit mining methods.
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| 32. | The deposit is currently under development by Cradle Resources to mine niobium by open pit mining methods.
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| 33. | There is, however, still some illegal mining going on ( using more destructive modern mining methods ).
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| 34. | There, with the aid of exhibits, guides described the old mining methods used before the Modern Era.
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| 35. | The Wallarah, Great Northern and Fassifern coal seams have been mined using bord and pillar mining methods.
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| 36. | The remains of such mining methods are very visible landform features in old nuggets and gold dust.
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| 37. | Other techniques used to detect anomalies include data mining methods, grammar based methods, and Artificial Immune System.
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| 38. | Over the years, Whiteneck used hydraulic mining methods to extract gold from the creek, but never got rich.
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| 39. | Ghana Consolidated Diamonds uses a strip and mine method at their placer mine in Akwatia, using Manitowoc draglines.
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| 40. | In years following, more sophisticated mining methods would restore West Virginia's role as a major producer of salt.
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