{"abstract":"The Occupational Safety and Health Administration (OSHA) proposes to amend its existing standards for occupational exposure to respirable crystalline silica. The basis for issuance of this proposal is a preliminary determination by the Assistant Secretary of Labor for Occupational Safety and Health that employees exposed to respirable crystalline silica face a significant risk to their health at the current permissible exposure limits and that promulgating these proposed standards will substantially reduce that risk. This document proposes a new permissible exposure limit, calculated as an 8-hour time-weighted average, of 50 micrograms of respirable crystalline silica per cubic meter of air (50 [mu]g/m\\3\\). OSHA also proposes other ancillary provisions for employee protection such as preferred methods for controlling exposure, respiratory protection, medical surveillance, hazard communication, and recordkeeping. OSHA is proposing two separate regulatory texts--one for general industry and maritime, and the other for construction--in order to tailor requirements to the circumstances found in these sectors.","action":"Proposed rule; request for comments.","agencies":[{"raw_name":"DEPARTMENT OF LABOR","name":"Labor Department","id":271,"url":"https://www.federalregister.gov/agencies/labor-department","json_url":"https://www.federalregister.gov/api/v1/agencies/271","parent_id":null,"slug":"labor-department"},{"raw_name":"Occupational Safety and Health Administration","name":"Occupational Safety and Health Administration","id":386,"url":"https://www.federalregister.gov/agencies/occupational-safety-and-health-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/386","parent_id":271,"slug":"occupational-safety-and-health-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2013/09/12/2013-20997.html","cfr_references":[{"chapter":null,"citation_url":null,"part":1910,"title":29},{"chapter":null,"citation_url":null,"part":1915,"title":29},{"chapter":null,"citation_url":null,"part":1926,"title":29}],"citation":"78 FR 56274","comment_url":null,"comments_close_on":"2013-12-11","correction_of":null,"corrections":[],"dates":"Written comments. Written comments, including comments on the information collection determination described in Section IX of the preamble (OMB Review under the Paperwork Reduction Act of 1995), must be submitted (postmarked, sent, or received) by December 11, 2013.","disposition_notes":null,"docket_ids":["Docket No. OSHA-2010-0034"],"dockets":[],"document_number":"2013-20997","effective_on":null,"end_page":56504,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2013/09/12/2013-20997.xml","html_url":"https://www.federalregister.gov/documents/2013/09/12/2013-20997/occupational-exposure-to-respirable-crystalline-silica","images":{"EP12SE13.005":{"large":"https://img.federalregister.gov/EP12SE13.005/EP12SE13.005_large.png","medium":"https://img.federalregister.gov/EP12SE13.005/EP12SE13.005_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.005/EP12SE13.005_original_size.png"},"EP12SE13.016":{"large":"https://img.federalregister.gov/EP12SE13.016/EP12SE13.016_large.png","medium":"https://img.federalregister.gov/EP12SE13.016/EP12SE13.016_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.016/EP12SE13.016_original_size.png"},"EP12SE13.004":{"large":"https://img.federalregister.gov/EP12SE13.004/EP12SE13.004_large.png","medium":"https://img.federalregister.gov/EP12SE13.004/EP12SE13.004_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.004/EP12SE13.004_original_size.png"},"EP12SE13.015":{"large":"https://img.federalregister.gov/EP12SE13.015/EP12SE13.015_large.png","medium":"https://img.federalregister.gov/EP12SE13.015/EP12SE13.015_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.015/EP12SE13.015_original_size.png"},"EP12SE13.003":{"large":"https://img.federalregister.gov/EP12SE13.003/EP12SE13.003_large.png","medium":"https://img.federalregister.gov/EP12SE13.003/EP12SE13.003_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.003/EP12SE13.003_original_size.png"},"EP12SE13.014":{"large":"https://img.federalregister.gov/EP12SE13.014/EP12SE13.014_large.png","medium":"https://img.federalregister.gov/EP12SE13.014/EP12SE13.014_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.014/EP12SE13.014_original_size.png"},"EP12SE13.002":{"large":"https://img.federalregister.gov/EP12SE13.002/EP12SE13.002_large.png","medium":"https://img.federalregister.gov/EP12SE13.002/EP12SE13.002_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.002/EP12SE13.002_original_size.png"},"EP12SE13.013":{"large":"https://img.federalregister.gov/EP12SE13.013/EP12SE13.013_large.png","medium":"https://img.federalregister.gov/EP12SE13.013/EP12SE13.013_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.013/EP12SE13.013_original_size.png"},"EP12SE13.001":{"large":"https://img.federalregister.gov/EP12SE13.001/EP12SE13.001_large.png","medium":"https://img.federalregister.gov/EP12SE13.001/EP12SE13.001_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.001/EP12SE13.001_original_size.png"},"EP12SE13.012":{"large":"https://img.federalregister.gov/EP12SE13.012/EP12SE13.012_large.png","medium":"https://img.federalregister.gov/EP12SE13.012/EP12SE13.012_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.012/EP12SE13.012_original_size.png"},"EP12SE13.000":{"large":"https://img.federalregister.gov/EP12SE13.000/EP12SE13.000_large.png","medium":"https://img.federalregister.gov/EP12SE13.000/EP12SE13.000_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.000/EP12SE13.000_original_size.png"},"EP12SE13.011":{"large":"https://img.federalregister.gov/EP12SE13.011/EP12SE13.011_large.png","medium":"https://img.federalregister.gov/EP12SE13.011/EP12SE13.011_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.011/EP12SE13.011_original_size.png"},"EP12SE13.010":{"large":"https://img.federalregister.gov/EP12SE13.010/EP12SE13.010_large.png","medium":"https://img.federalregister.gov/EP12SE13.010/EP12SE13.010_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.010/EP12SE13.010_original_size.png"},"EP12SE13.020":{"large":"https://img.federalregister.gov/EP12SE13.020/EP12SE13.020_large.png","medium":"https://img.federalregister.gov/EP12SE13.020/EP12SE13.020_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.020/EP12SE13.020_original_size.png"},"EP12SE13.009":{"large":"https://img.federalregister.gov/EP12SE13.009/EP12SE13.009_large.png","medium":"https://img.federalregister.gov/EP12SE13.009/EP12SE13.009_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.009/EP12SE13.009_original_size.png"},"EP12SE13.008":{"large":"https://img.federalregister.gov/EP12SE13.008/EP12SE13.008_large.png","medium":"https://img.federalregister.gov/EP12SE13.008/EP12SE13.008_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.008/EP12SE13.008_original_size.png"},"EP12SE13.019":{"large":"https://img.federalregister.gov/EP12SE13.019/EP12SE13.019_large.png","medium":"https://img.federalregister.gov/EP12SE13.019/EP12SE13.019_medium.png","original_size":"https://img.federalregister.gov/EP12SE13.019/EP12SE13.019_original_size.png"},"EP12SE13.007":{"large":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