{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "R/PT1S", "bureauCode": ["000:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Victor Yu", "hasEmail": "mailto:yu.victor@dol.gov"}, "dataQuality": true, "describedBy": "https://arlweb.msha.gov/OpenGovernmentData/DataSets/Controller_Operator_History_Definition_File.txt", "describedByType": "text/plain", "description": "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.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://www.msha.gov/mine-data-retrieval-system", "title": "Mine Data Retrieval System - Explore MSHA Datasets"}], "identifier": "MSHA-19-012:030-170", "keyword": ["MSHA", "controller id", "end date", "mine controller", "mine id", "mine operator", "operator id", "start date"], "landingPage": "https://www.msha.gov/mine-data-retrieval-system", "language": ["en-US"], "modified": "2026-03-12T13:02:09.578Z", "programCode": ["000:000"], "publisher": {"@type": "org:Organization", "name": "Mine Safety and Health Administration", "subOrganizationOf": {"@type": "org:Organization", "name": "Mine Safety and Health Administration"}}, "rights": "true", "temporal": "1983-01-01/2026-03-31", "title": "MSHA Controller and Operator History"}