Take Action: Visit AGC’s Legislative Action Center to Submit Your Comments Today On Sept. 12, 2013, the Occupational Safety and Health Administration (OSHA) published a proposed new rule on silica exposure. AGC members, chapters and interested stakeholders are encouraged to submit comment letters opposing the proposed new rule on silica exposure through the AGC Legislative Action Center (LAC). A sample, editable letter has been provided for your convenience and can be customized to your respective operations. Click here to access the letter. All comments must be submitted by 11:59 p.m. (ET) Feb. 11, 2014.