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MSHA Individual
Identification Number (MIIN)
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Who does this apply to?
- Mine Safety and Health Administration (MSHA) personnel, mine operators, independent contractors, miners, state grantees, MSHA qualified and certified persons and approved instructors.
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In addition to persons holding an MSHA certification to collect respirable dust samples and/or certification to maintenance and calibrate respirable dust sampling units, a MIIN is only required for persons applying for or modifying one of the following qualifications, certifications, or approvals:
- Electrical Qualification Training, Low/Medium Voltage (Underground)
- Electrical Qualification Retraining, Low/Medium Voltage (Underground)
- Methane/Oxygen Qualification (Underground/Surface)
- Hoisting Qualification (Underground/Surface)
- Explosives/Blasting Qualification
- Impoundment Qualification
- MSHA Approved Instructors (Part 48 and Part 49, Electrical)
- Underground Foreman
- Underground Assistant Foreman
- Preshift Examiner
- Surface Foreman
What is a MIIN?
- A MIIN is an MSHA Individual Identification Number
- MIIN’s will be substituted for the social security number, eliminating the need for miners to provide the SSN on documents submitted to MSHA
- Use of the MIIN will help protect against identity theft
How do I get a MIIN?
- Go online at www.msha.gov then click on Forms/Online Filing, and then on MSHA Individual Identification Number Request (5000-46) .
- Call the toll-free phone number 1 800-579-2647
- Fill out MSHA Form 5000-46, "Request for MSHA Individual Identification Number (MIIN)" and Send by secure FAX to (303) 231-5474 or
Mail to: Mine Safety and Health Administration
Qualification and Certification Unit
P.O. Box 25367, DFC
Denver, CO 80225
Useful Resources
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