| 21. | The world's largest gypsum mine is located at Milford.
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| 22. | Republic Gypsum later sold the plant to American Gypsum in 1998.
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| 23. | Republic Gypsum later sold the plant to American Gypsum in 1998.
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| 24. | Later, sidings were added to serve the nearby gypsum works.
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| 25. | Gypsum continues to be mined from the banks of the Lake.
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| 26. | The anhydrite and gypsum react with organic material to form calcite.
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| 27. | Sulfur will be obtained from pyrites, then gypsum or anhydrite.
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| 28. | Wall's limestone and gypsum was also shipped to Sydney.
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| 29. | Egypt leads Africa in the extraction of both talc and gypsum.
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| 30. | In 1877 there was created a gypsum model of the monument.
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