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    • MSHA Controller and Operator History

    Metadata Updated: January 20, 2026

    Shows the history of controllers at mining operations and the associations to the operators at those mines. Included are the starting and ending dates for a controller at each mine and the operator history at that mine.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date April 12, 2021
    Metadata Updated Date January 20, 2026
    Data Update Frequency R/PT1S

    Metadata Source

    Harvested from DOL JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 12, 2021
    Metadata Updated Date January 20, 2026
    Publisher Mine Safety and Health Administration
    Maintainer
    Identifier MSHA-19-012:030-170
    Language en-US
    Data Last Modified 2025-12-15T14:54:58.057Z
    Rights true
    Public Access Level public
    Data Update Frequency R/PT1S
    Bureau Code 000:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Data Dictionary https://arlweb.msha.gov/OpenGovernmentData/DataSets/Controller_Operator_History_Definition_File.txt
    Data Dictionary Type text/plain
    Harvest Object Id cdc5ecbb-0f71-49f5-bb8e-ce0d5f22cbe9
    Harvest Source Id 81f6ae6e-c0d0-4e98-bb1b-04e323ef429e
    Harvest Source Title DOL JSON
    Homepage URL https://www.msha.gov/mine-data-retrieval-system
    Program Code 000:000
    Publisher Hierarchy Mine Safety and Health Administration > Mine Safety and Health Administration
    Source Datajson Identifier True
    Source Hash a86690d2a354a61880cda5275b53c3a3f0edb1e61aa4b361828b966ff29d59af
    Source Schema Version 1.1
    Temporal 1983-01-01/2025-12-31

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