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 44—RULES OF PRACTICE FOR PETITIONS FOR MODIFICATION OF MANDATORY SAFETY STANDARDS > SUBPART E—Effect of Initial Decision (§44.50 to §44.53)