[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: 30CFR33.21]



[Page 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.  33.21  Modification of test equipment.



    For test purposes the unit or system may be modified, such as by 

attaching instruments or measuring devices, at MSHA's discretion; but 

such modification shall not alter its performance.