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July 2, 2009
SPOKANE (AP) — Crews are testing residential yards near W.R. Grace's former insulation factory in Spokane for asbestos fibers that can cause cancer.
For 22 years, Vermiculite Northwest produced Zonolite, an asbestos-tainted attic insulation. Rail cars brought vermiculite ore from Libby, Mont., to the Spokane plant, where furnaces heated the ore until it puffed up into lightweight insulation.
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