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DOL/MSHA | RIN: 1219-AB36 | Publication ID: Fall 2013 |
Title: Respirable Crystalline Silica | |
Abstract: Current standards limit exposures to quartz (crystalline silica) in respirable dust. The metal and nonmetal mining industry standard is based on the 1973 American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values formula: 10 mg/m3 divided by the percentage of quartz plus 2. Overexposure to crystalline silica can result in some miners developing silicosis, an irreversible but preventable lung disease, which ultimately may be fatal. The formula is designed to limit exposures to 0.1 mg/m3 (100 ug/m3) of silica. National Institute for Occupational Safety and Health (NIOSH) recommends a 50 ug/m3 exposure limit for respirable crystalline silica. MSHA will publish a proposed rule to address miners' exposure to respirable crystalline silica. | |
Agency: Department of Labor(DOL) | Priority: Other Significant |
RIN Status: Previously published in the Unified Agenda | Agenda Stage of Rulemaking: Proposed Rule Stage |
Major: No | Unfunded Mandates: No |
CFR Citation: 30 CFR 58 | |
Legal Authority: 30 USC 811 |
Legal Deadline:
None |
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Timetable:
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Regulatory Flexibility Analysis Required: Undetermined | Government Levels Affected: Local, State |
Small Entities Affected: Businesses, Governmental Jurisdictions | Federalism: No |
Included in the Regulatory Plan: No | |
RIN Information URL: www.msha.gov/regsinfo.htm | Public Comment URL: www.regulations.gov |
RIN Data Printed in the FR: No | |
Agency Contact: George F. Triebsch Director, Office of Standards, Regulations, and Variances Department of Labor Mine Safety and Health Administration 1100 Wilson Boulevard, Room 2350, Arlington, VA 22209 Phone:202 693-9440 Fax:202 693-9441 Email: triebsch.george@dol.gov |