https://regulations.justia.com/regulations/fedreg/agencies/department-of-labor/mine-safety-and-health-administration/2012/12/31?registers=between Tue, 07 May 2024 20:16:29 -0700 Tue, 07 May 2024 20:16:29 -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/2012/12/31?registers=between https://regulations.justia.com/regulations/fedreg/2012/12/31/2012-31233.html https://regulations.justia.com/regulations/fedreg/2012/12/31/2012-31233.html Mon, 31 Dec 2012 00:00:00 -0800 2012-31233 Notice http://www.gpo.gov/fdsys/pkg/FR-2012-12-31/pdf/2012-31233.pdf