For those that have not been involved with the U.S. Department of Labor Mine Safety and Health Administration (MSHA) previously, finding the actual governing rules can be a challenge. We have listed them here to ease your pain:

Criteria for the Evaluation and Test of Intrinsically Safe Apparatus and Associated Apparatus

Understanding and Expediting the MSHA Intrinsic Safety Approval Process Frequently Asked Questions and Guide

Download Paper: IC9496.pdf

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