[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: 30CFR90]

[Page 677-678]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 90_MANDATORY HEALTH STANDARDS_COAL MINERS WHO HAVE EVIDENCE OF THE 
DEVELOPMENT OF PNEUMOCONIOSIS--Table of Contents
 
                      Subpart C_Sampling Procedures
 
Sec.  90.203  Certified person; maintenance and calibration.

    (a) Approved sampling devices shall be maintained and calibrated by 
a certified person.
    (b) To be certified, a person shall pass the MSHA examination on 
maintenance and calibration procedures for respirable dust sampling 
equipment.
    (c) A person may be temporarily certified by MSHA to maintain and 
calibrate approved sampling devices if the person receives instruction 
from an authorized representative of the Secretary in the maintenance 
and calibration procedures for respirable dust

[[Page 678]]

sampling equipment under this rule. The temporary certification shall be 
withdrawn if the person does not successfully complete the examination 
conducted by MSHA on maintenance and calibration procedures within six 
months from the issue date of the temporary certification.