https://regulations.justia.com/regulations/fedreg/agencies/department-of-labor/mine-safety-and-health-administration/2013/02/20?registers=between Fri, 03 May 2024 16:19:13 -0700 Fri, 03 May 2024 16:19:13 -0700 Justia Regulations Tracker Copyright 2011 Justia Inc. https://regulations.justia.com/images/justiafedregulations.gif https://regulations.justia.com/regulations/fedreg/agencies/department-of-labor/mine-safety-and-health-administration/2013/02/20?registers=between https://regulations.justia.com/regulations/fedreg/2013/02/20/2013-03797.html https://regulations.justia.com/regulations/fedreg/2013/02/20/2013-03797.html Wed, 20 Feb 2013 00:00:00 -0800 2013-03797 Notice http://www.gpo.gov/fdsys/pkg/FR-2013-02-20/pdf/2013-03797.pdf