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 7—TESTING BY APPLICANT OR THIRD PARTY > SUBPART C—Battery Assemblies (§7.41 to §7.52) > 7.49—Approval marking.