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�1 <br />copper <br />Copper dust is -an odorless solid. <br />Short-term exposure to copper dust can cause a feeling of illness <br />similar to the common. cold with sensations of chills and stuffiness <br />of the head.* Small copper particles may enter the eye and cause <br />irritation, discoloration, and damage. <br />The TWA of the PEL for copper dust is 1 mg/m3. <br />UE <br />0 • 15 <br />