29 CFR 1910.1200 (Employer's Responsibility) (I) Employers shall ensure that labels on incoming containers of hazardous chemicals are not removed or defaced
US Department of Labor, Silica eTool - Glossary, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/dsg/etools/silica/glossary/gl ossary.html, (OSHA/ Silica - Amer) {625}