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Firm fights lake pollution with shale and biochar

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Posted on November 1, 2018 |
By Christopher Ross



vanacore DSC_4648.jpg
ROCK DUST LOCAL LLC founder Tom Vanacore surveys the remaining supply of shale dust at Wilcox Quarry in Shoreham. The recipient of a $25,000 state grant, Rock Dust Local uses the byproducts of road-material mining to create amendments that help prevent agricultural soils from polluting the state’s waterways. Independent photo/John S. McCright

BRIDPORT — Rock Dust Local LLC, a Bridport company founded by Tom Vanacore, last week shipped out 80 tons of freshly broken Addison County shale mixed with biochar — enough to cover 40 acres of Champlain Valley farm fields.

Vanacore is betting the dark gray mixture will convert excess phosphorus into mineral form and prevent it from making its way into Vermont streams and ultimately Lake Champlain.

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