https://regulations.justia.com/regulations/fedreg/agencies/department-of-labor/mine-safety-and-health-administration/2013/03/28?registers=between Thu, 02 May 2024 17:16:18 -0700 Thu, 02 May 2024 17:16:18 -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/2013/03/28?registers=between https://regulations.justia.com/regulations/fedreg/2013/03/28/2013-07163.html https://regulations.justia.com/regulations/fedreg/2013/03/28/2013-07163.html Thu, 28 Mar 2013 00:00:00 -0700 2013-07163 Notice http://www.gpo.gov/fdsys/pkg/FR-2013-03-28/pdf/2013-07163.pdf