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*[http://www.answers.com/topic/chromium Answers.com]
 
*[http://www.answers.com/topic/chromium Answers.com]
 
*[http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=13096 OSHA.gov regulation on hexavalent chromium]
 
*[http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=13096 OSHA.gov regulation on hexavalent chromium]
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