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Steel manufacturing by-product could help filter farm run-off water

November 27, 2019
By CTV News London


They’re called slag bags and they may be another step toward cleaner waterways.

Slag is waste material, a by-product of the steel making industry, but it may have value in the effort to clean up our waterways.

The Upper Thames River Conservation Authority launched a three-year pilot project near Lucan, Ont. which uses slag bundled in bags to draw phosphorus from farm run-off. | READ MORE