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'''Project Brass''' was a 1993 [[Philip Morris]] (PM) project designed to confuse the public regarding the health dangers of exposure to secondhand smoke, and to minimize the damage that the secondhand smoke issue was causing the tobacco industry. Project Brass was PM's response to the [http://www.epa.gov/history/topics/smoke/01.htm Risk Assessment] issued on January 7, 1993 by the [[U.S. Environmental Protection Agency]] that classified secondhand tobacco smoke (also known as [[Environmental Tobacco Smoke]], or ETS) as a Group A Human Carcinogen, the same rating the agency gives to asbestos, radon gas and vinyl chloride. <ref>U.S. Environmental Protection Agency [http://www.epa.gov/history/topics/smoke/01.htm EPA Designates Passive Smoking a "Class A" or Known Human Carcinogen] Press release. January 7, 1993</ref>