CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER G—FILING AND OTHER ADMINISTRATIVE REQUIREMENTS (parts 40 to 45) > PART 42—NATIONAL MINE HEALTH AND SAFETY ACADEMY > SUBPART B—Tuition Fees (§42.10 to §42.40) > 42.40—Refunds.