| 21. | The deposits consist of soda, potash, borax and common salt.
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| 22. | Potash making became a major industry in British North America.
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| 23. | Other resources include natural gas, salt, and potash.
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| 24. | In 1926, the Potash Highway was reconfigured as Nebraska Highway 2.
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| 25. | Potash was manufactured as the land was cleared for farming.
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| 26. | The Saskatchewan potash industry began in the 1950s and 1960s.
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| 27. | In 1912, mining began on the potash reserves in the area.
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| 28. | The soil consists of nitrate, sulpher, potash in smaller quantities.
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| 29. | The area has volcanic origins and is rich in potash.
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| 30. | Potash mining has generated lot of interest in recent years.
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