[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: 30CFR50.1]

[Page 242-243]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 50--NOTIFICATION, INVESTIGATION, REPORTS AND RECORDS OF ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND COAL PRODUCTION IN MINES--Table of Contents
 
                           Subpart A--General
 
Sec. 50.1  Purpose and scope.


    This part 50 implements sections 103(e) and 111 of the Federal Coal 
Mine Health and Safety Act of 1969, 30 U.S.C. 801 et seq., and sections 
4 and 13 of the Federal Metal and Nonmetallic Mine Safety Act, 30 U.S.C. 
721 et seq., and applies to operators of coal, metal, and nonmetallic 
mines. It requires operators to immediately notify the Mine Safety and 
Health Administration (MSHA) of accidents, requires operators to 
investigate accidents, and restricts disturbance of accident related 
areas. This part also requires operators to file reports pertaining to 
accidents, occupational injuries and occupational illnesses, as well as 
employment and coal production data, with MSHA, and requires operators 
to maintain copies of reports at relevant mine offices. The purpose of 
this part is to implement MSHA's authority to investigate, and to obtain 
and utilize information pertaining to, accidents, injuries, and 
illnesses occurring or originating in mines. In utilizing information 
received under part 50, MSHA will develop rates of injury occurrence 
(incident rates or IR), on the basis of 200,000 hours of employee 
exposure (equivalent to 100 employees working 2,000 hours per year). The 
incidence rate for a particular injury category will be based on the 
formula:

                        IR=no. of cases x 200,000

                       hours of employee exposure

MSHA will develop data respecting injury severity using days away from 
work or days of restricted work activity and the 200,000 hour base as 
criteria. The severity measure (SM) for a particular injury category 
will be based on the formula:

[[Page 243]]

                        SM=sum of days x 200,000

                       hours of employee exposure

[42 FR 65535, Dec. 30, 1977; 43 FR 1617, Jan. 11, 1978, as amended at 43 
FR 12318, Mar. 24, 1978]