MSHA Mine Product Approvals

MET is a leading test and certification laboratory for hazardous location products.  Under MSHA’s Subchapter B – Testing, Evaluation, and Approval of Mining Products, Part 6, the U.S. Department of Labor agency has created guidelines for the testing and evaluation of mine equipment by independent laboratories and non-MSHA product safety standards.

This program applies to these product categories:

  • Battery Powered Mobile Machines
  • Batteries for Mobile Machines
  • X/P Connection Boxes/Enclosures
  • X/P Plug and Receptacles/Connectors
  • Diesel Electronics
  • Electric Cap Lamps
  • X/P Electric Motors
  • Permissible Fans
  • Flashlights
  • Ground Check (Wire) Monitors
  • Intrinsically Safe Instruments
  • Intrinsically Safe Relays
  • Lighting Systems
  • Communication Systems
  • Multi-Gas Detectors – Handheld
  • Machine Methane Monitoring Systems
  • Telephone and Signaling Devices
  • Water Pumps

MSHA will accept testing and evaluation performed by an independent laboratory for purposes of MSHA product approval provided that they receive:

  1. Written evidence of the laboratory’s independence and current recognition by a laboratory accrediting organization
  2. Complete technical explanation of how the product complies with each requirement in the applicable MSHA product approval requirements
  3. Identification of components or features of the product that are critical to the safety of the product
  4. All documentation, including drawings and specifications, as submitted to the independent laboratory by the applicant

MSHA will accept equivalent non-MSHA product safety standards, assuming they provide the same degree of protection. With modifications, these standards are accepted:

  • IEC 60079-0, Fourth Edition, 2004-01
  • IEC 60079-1, Fifth Edition, 2003-11