| 11. | An important cargo was coal all from the many mines and opencast workings.
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| 12. | In 1926 the opencast mine was closed due to exhaustion of the ore.
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| 13. | The largest opencast amethyst vein in the world is in Maissau, Lower Austria.
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| 14. | Godavarikhani has 4 opencasts and 14 underground mines.
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| 15. | Bukuru is also associated with the opencast mine workings are exploitable deposits of kaolin.
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| 16. | Opencast mining took place in 1975 removing all evidence of the former mining industry.
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| 17. | When opencast work was no longer feasible, tunnels were driven to follow the veins.
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| 18. | This makes mining the ore an expensive proposition compared to typical ironstone or haematite opencasts.
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| 19. | There is also an opencast lignite mine located just north of town at Coal Creek.
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| 20. | Deerpark Mines was the largest opencast site.
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