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| Opta Minerals Inc |
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| Opta Minerals processes, sells and distributes abrasives and other industrial minerals to the foundry, steel and marine/bridge cleaning industries, sources specialty sands and garnets for the water filtration industry, and recycles inorganic materials under special permits from government authorities at both its Waterdown, Ontario and Norfolk, Virginia sites. |
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| Opta Minerals Inc |
| Waterdown, Ontario |
| Canada |
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