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| tar use; tar use Any employment or utilization of dark, heavy, viscous substances or residue derived from the distillation of certain organic materials, often to produce benzene, soap, dyes, cosmetics and other products | |||
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| tar use; tar use Any employment or utilization of dark, heavy, viscous substances or residue derived from the distillation of certain organic materials, often to produce benzene, soap, dyes, cosmetics and other products | |||