[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: 30CFR33.20]



[Page 166-167]

 

                       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 B_Dust-Collector Requirements

 

Sec.  33.20  Design and construction.





    (a) MSHA will not test or investigate any dust collector that in its 

opinion is not constructed of suitable materials, that evidences faulty 

workmanship, or that is not designed upon sound engineering principles. 

Since all possible designs, arrangements, or combinations of components 

and materials cannot be foreseen, MSHA reserves the right to modify the 

tests specified in this part in such manner to obtain substantially the 

same information and degree of protection as provided by the tests 

described in Subpart C of this part.

    (b) Adequacy of design and construction of a unit or system will be 

determined in accordance with its ability (1) to prevent the 

dissemination of objectionable or harmful concentrations of



[[Page 167]]



dust into a mine atmosphere, and (2) to protect against explosion and/or 

fire hazards of electrical equipment, except as provided in Sec.  

33.38(b).