Crystalline Silica Exposure You are here: Main Industry Issues Issues Crystalline Silica Exposure TCNA’s Letter and Testimonyin Response to OSHA-Proposed Rule on Crystalline Silica Exposure TCNA’s Letter to U.S. Department of Labor (February 11, 2014) TCNA_Comments_Submitted_for_OSHAs_Crystalline_Silica_Proposal Eric Astrachan’s Testimony (April 2, 2014) TCNA_E_Astrachan_Testimony_to_OSHA_2_April_2014 Dr. Jyothi Rangineni’s Testimony (April 2, 2014) OSHA_Crystalline_Silica_Public_Hearing_Testimony_of_Jyothi_Rangineni Report prepared by Environmental Health & Engineering, Inc. Exposures To Crystalline Silica and Metals in Ceramic and Glass Tile Exposures-To-Crystalline-Silica-and-Metals-In-Ceramic-and-Glass-Tile_November-2017
