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Home > Company Categories > NONMETALLIC MATERIALS AND PRODUCTS
Bituminous and other materials, coal, tar (62)
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Oil shale and tar sands (20)
Petroleum crudes, natural gas (35)
Petroleum refinery products, including asphaltic materials, petrochemicals, lubricants (189)
Semiconductor materials and devices (89)
Soil and rock, building stones, aggregates, sand (292)
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