MSHA Quartz Samples
type: Dataset
description: 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.
keyword: AmeriGEO
keyword: AmeriGEOSS
keyword: CKAN
keyword: GEO
keyword: GEOSS
keyword: National
keyword: North America
keyword: United States
keyword: air-quality
keyword: cassette
keyword: micrograms
keyword: mining
keyword: msha
keyword: quartz
keyword: quartz-percent
keyword: silica
issued: 2025-09-23T14:48:00.561891
modified: 2025-04-02T11:39:00.227000+00:00
language: {en-US}
contact point: Organization
  fn: Victor Yu

US Migrating
type: Agent

MSHA Mine Data Retrieval System
type: Distribution
access URL: https://www.msha.gov/mine-data-retrieval-system
issued: 2021-04-12T19:37:05.407927
modified: 2025-09-23T14:48:00.546757