{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-17T06:17:15.228Z","identity":{"mine_id":"4202001","name":"Portable Crusher #1","status":"Abandoned","status_date":"1993-05-10","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"UT","county":"Duchesne","nearest_town":"","operator_id":"L09284","operator_name":"G R Porter & Sons Construction","controller_id":"M06172","controller_name":"Porter G R","district":"C09","office":"Price UT Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":3},"relationships":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-17T05:35:58.500035+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"4202001","name":"Portable Crusher #1"},"operator":{"type":"operator","id":"L09284","name":"G R Porter & Sons Construction"},"controller":{"type":"controller","id":"M06172","name":"Porter G R"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09284","name":"G R Porter & Sons Construction"},"object":{"type":"mine","id":"4202001","name":"Portable Crusher #1"},"validFrom":"1987-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202001|L09284|1987-02-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06172","name":"Porter G R"},"object":{"type":"mine","id":"4202001","name":"Portable Crusher #1"},"validFrom":"1987-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202001|M06172|1987-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06172","name":"Porter G R"},"object":{"type":"operator","id":"L09284","name":"G R Porter & Sons Construction"},"validFrom":"1987-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4202001","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202001|L09284|1987-02-01|M06172|1987-02-01|136416"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"1993-05-10","lastDate":"1993-05-10","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":1,"firstDate":"1987-02-01","lastDate":"1987-02-01","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]}],"safety":{"href":"/api/v1/mines/4202001/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4202001/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4202001","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873}}