https://regulations.justia.com/regulations/fedreg/agencies/department-of-labor/mine-safety-and-health-administration/2012/05/23?registers=between Tue, 21 May 2024 22:57:40 -0700 Tue, 21 May 2024 22:57:40 -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/2012/05/23?registers=between https://regulations.justia.com/regulations/fedreg/2012/05/23/2012-12417.html https://regulations.justia.com/regulations/fedreg/2012/05/23/2012-12417.html Wed, 23 May 2012 00:00:00 -0700 2012-12417 Notice http://www.gpo.gov/fdsys/pkg/FR-2012-05-23/pdf/2012-12417.pdf