[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR33.9]

[Page 155]
 
                       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. 33.9  Certification of dust-collecting systems.

    Manufacturers of dust-collecting systems that are designed for 
integral use on machines with drilling equipment may apply to MSHA to 
issue a certificate of performance for such systems. To qualify for a 
certificate of performance, the dust-collecting system shall have met 
satisfactorily the test requirements of Subpart C under specified 
operating conditions, such as type of drilling equipment, drilling 
speed, and power requirements and the construction thereof shall be 
adequately covered by specifications and drawings officially recorded 
and filed with MSHA. Individual parts of dust-collecting systems will 
not be certified for performance. Certificates of performance may be 
cited to fabricators of combination units as evidence that further 
inspection and testing of the dust-collecting system will not be 
required, provided the dust-collecting requirements of the drilling 
equipment do not exceed the limits of performance for which the system 
was certified. Since MSHA does not sanction the use of the words 
``permissible'' or ``approved'' except as applying to completely 
assembled equipment, dust-collecting systems, which have been certified 
only as to performance, shall not be advertised or labeled in a manner 
inferring that such systems themselves are permissible or approved by 
MSHA. However, a certified system may be advertised as suitable for use 
on combination units for which certification may be desired if the 
limits of its performance are cited. Certified dust-collecting systems 
shall bear labels or tags which shall contain the following: 
``Performance-tested Dust Collecting, System, MSHA File No. P/T--------
,'' and name of manufacturer, identifying numbers of the dust-collector 
parts, and description of the limitations for which performance is 
certified. MSHA will assign a P/T file number in the certification 
letter.