[Code of Federal Regulations] [Title 30, Volume 1] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 30CFR33.1] [Page 162] TITLE 30--MINERAL RESOURCES CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR PART 33_DUST COLLECTORS FOR USE IN CONNECTION WITH ROCK DRILLING IN COAL MINES--Table of Contents Subpart A_General Provisions Sec. 33.1 Purpose. Subpart A_General Provisions Sec. 33.1 Purpose. 33.2 Definitions. 33.3 Consultation. 33.4 Types of dust collectors for which certificates of approval may be granted. 33.5 [Reserved] 33.6 Application procedures and requirements. 33.7 Date for conducting tests. 33.8 Conduct of investigations, tests, and demonstrations. 33.9 Certification of dust-collecting systems. 33.10 Certificates of approval or performance. 33.11 Approval plates. 33.12 Changes after certification. 33.13 Withdrawal of certification. Subpart B_Dust-Collector Requirements 33.20 Design and construction. 33.21 Modification of test equipment. 33.22 Mode of use. 33.23 Mechanical positioning of parts. Subpart C_Test Requirements 33.30 Test site. 33.31 Test space. 33.32 Determination of dust concentration. 33.33 Allowable limits of dust concentration. 33.34 Drilling test. 33.35 Methods of drilling; dust-collector unit. 33.36 Method of drilling; combination unit or dust-collecting system. 33.37 Test procedure. 33.38 Electrical parts. Authority: 30 U.S.C. 957, 961. Source: Schedule 25B, 25 FR 6473, July 9, 1960, unless otherwise noted. The regulations in this part set forth the requirements for dust collectors used in connection with rock drilling in coal mines to procure their certification as permissible for use in coal mines; procedures for applying for such certification; and fees.