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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    DMR All Mines

    Metadata Updated: January 23, 2026

    This service presents location, status, and other information regarding mining operations regulated under the Surface Mining and Reclamation Act of 1975 (SMARA) in California. The data presented in this service is reported by mine operators in annual reports provided to the California Department of Conservation Division of Mine Reclamation (DMR) under Public Resources Code section 2207. While DMR attempts to populate Mines Online with accurate map coordinate data, the DMR cannot guarantee the accuracy of operator-reported location information.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date January 23, 2026
    Metadata Updated Date January 23, 2026

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 23, 2026
    Metadata Updated Date January 23, 2026
    Publisher California Department of Conservation
    Maintainer
    Identifier ff1b37df-34bb-49d0-98e1-6999897e3959
    Data First Published 2017-04-11T22:20:46.000Z
    Data Last Modified 2020-05-02T21:13:09.011Z
    Category Natural Resources
    Public Access Level public
    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
    Harvest Object Id 0380ad20-d31b-4bd2-9f71-852563724c04
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash c0afd72496c740ed4d9bc39ad272a8c6636f1e61383e86d6d270fbf8a90114b9
    Source Schema Version 1.1

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