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CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS (parts 5 to 36) > PART 27—METHANE-MONITORING SYSTEMS > SUBPART C—Test Requirements (§27.30 to §27.41) > 27.35—Tests to determine life of critical components and subassemblies.
27.35—Tests to determine life of critical components and subassemblies.
Replaceable components may be subjected to appropriate life tests at the discretion of MSHA.