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Although the smelting of ore in Sudbury initially led to the emission of large amounts of Sulphur Dioxide, this was not an uncommon problem with many smelters processing sulfidic ores or with power plants using high sulphur fuelsThee problems noted were a decrease in vegetation due to sulfurdioxice exposure, not as a result of acid rain.

A major issue was the disposal of large amounts of slag as a solid waste.

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10y ago

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