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NIEHS Oil Spill Cleanup Training Tool <br />OSHA <br />Tarballs <br />• Weathering processes eventually create a tarball that is hard and crusty on <br />the outside and soft and gooey on the inside. Turbulence in the water or <br />beach activity from people or animals may break open tarballs, exposing <br />their softer, more fluid centers. <br />42 WORKER EDUCATION & TRAINING PROGRAM <br />