Skip to main content
U.S. flag

An official website of the United States government.

Request an MSHA Individual Identification Number (MIIN)

Form ID

MSHA personnel, mine operators, independent contractors, miners, state grantees, MSHA qualified and certified persons and approved instructors should apply for a MIIN. MIINs will be substituted for social security numbers, eliminating the need to provide social security numbers on documents submitted to MSHA.

Control ID
Expiration Date
Mon, 11/30/2026 - 15:00
Filing Options

Form 5000-46, MSHA Individual Identification Number can be filed online or completed online and printed, and mailed to MSHA according to the instructions provided below. 

File Online
Form fill, print and mail or fax
Change online filling registration information

Filing Instructions

Detailed Instructions for completing Form 5000-46, MSHA Individual Identification Number are included on the form, or may be downloaded separately using this link

Contact Information

Questions regarding this form should be directed to MSHA Qualification and Certification Unit at above address or locally in Colorado (303) 231-5472, toll free (800) 579-2647, Fax (303) 231-5474, E-Mail to

Privacy Notice

Privacy Act Notice

This is Privacy Act of 1974, as amended, information and is protected as provided in the system of records notice (SORN), DOL/MSHA-1, Mine Safety and Health Administration Standardized Information System (MSIS).  Privacy Act of 1974; Publication in Full of All Notices of Systems of Records, Including Several New Systems, Substantive Amendments to Existing Systems, Decommissioning of Obsolete Legacy Systems, and Publication of Proposed Routines Uses, 81 FR 25766, 25812-15 (2016).  Under 31 U.S.C. 7701(c), MSHA uses this information to assign a unique identifier to each individual, who will be doing business with the agency.  MSHA approves, qualifies, or certifies miners and others for work such as instructors, electricians, and Part 90 miners.

The information collection includes Privacy Act material, which is covered under "Computer Security Guidelines for Implementing the Privacy Act of 1974". It is also covered under OMB Circular A-130, Management of Federal Information Resources Computer Fraud & Abuse Act of 1986, DLMS- Chapter 800- Network Operations and LAN Management, DLMS - Chapter 1500-Privacy Policy on Data Collection over DOL Web Sites, Federal information Security Management Act (FISMA) of 2002, Title III [Public Law 107-347] as part of the E-Government Act of 2002.

Burden Statement

Public reporting burden for this collection of information is estimated to average 5 minutes per response, including the time for reviewing instructions. An agency may not conduct or sponsor, and persons are not required to respond to this collection of information unless it displays a valid OMB Control Number. Comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to:

Office of Standards, Regulations and Variances, MSHA
201 12th Street South,

Suite 401 Arlington, VA 22202-5450.