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RoC Profile: Asbestos; 14th RoC 2016 - ntp.niehs.nih.gov
By 2008, chrysotile was the only type of asbestos used in the United States (Virta 2008); 64% of chrysotile used was categorized as grade 7 asbestos (with fiber lengths less than 3 mm), followed by grades 4, 5, and 3 (Virta 2002a, 2009).
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Synthetic Turf/Recycled Tire Crumb Rubber Research …
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