FOUNDRY SAND RECYCLING
In Burgundy, France, 17,000 tonnes of discarded foundry sand went beneath RN 80; two years later, tests found good road strength and no environmental impact
In 1990, Waupaca Foundry supplied 20,000 tons of used sand for a Wisconsin highway pilot project. 12 years later, its next contract called for 80,000 tons for Highway 10
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