https://regulations.justia.com/regulations/fedreg/agencies/department-of-labor/mine-safety-and-health-administration/2013/05/20?registers=between Tue, 30 Apr 2024 10:41:13 -0700 Tue, 30 Apr 2024 10:41:13 -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/2013/05/20?registers=between https://regulations.justia.com/regulations/fedreg/2013/05/20/2013-11887.html https://regulations.justia.com/regulations/fedreg/2013/05/20/2013-11887.html Mon, 20 May 2013 00:00:00 -0700 2013-11887 Notice http://www.gpo.gov/fdsys/pkg/FR-2013-05-20/pdf/2013-11887.pdf