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    • MSHA Quartz Samples

    Metadata Updated: January 20, 2026

    Lists all operator and inspector dust samples taken. It includes information such as cassette numbers, date the sample was taken, quartz percentage, sample type, occupation codes related to the person or area sampled and mine information. Cassette number is the primary key for this dataset and it can be linked to the Mines dataset using Mine ID for further mine information.

    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-19-012:030-178
    Language en-US
    Data Last Modified 2025-12-15T13:49:55.219Z
    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 Dictionary https://arlweb.msha.gov/OpenGovernmentData/DataSets/Quartz_Samples_Definition_File.txt
    Data Dictionary Type text/plain
    Harvest Object Id 26fbd938-db7d-4040-82ae-ea9432370a1c
    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 8d44cc688d0796446668f91d5a46b82d007d58fadabf2410d18d2862775b1010
    Source Schema Version 1.1
    Temporal 2000-01-01/2025-12-31

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