{"data":{"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":"2026-10-13T11:19:05.459773+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":"1516910","name":"Sterling Mine"},"operator":{"type":"operator","id":"P23849","name":"Hasco Inc"},"controller":{"type":"controller","id":"C14433","name":"James A  Hubbard"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08701","name":"Sturgill Leslie"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1981-04-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|C08701|1981-04-20|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08974","name":"Ball Ralph"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1981-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|C08974|1981-06-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14115","name":"John H  Parton"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1990-02-01","validTo":"1997-01-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|C14115|1990-02-01|1997-01-01"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17327","name":"Switch Energy Corp"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1990-07-01","validTo":"1994-11-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P17327|1990-07-01|1994-11-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08701","name":"Sturgill Leslie"},"object":{"type":"operator","id":"P17327","name":"Switch Energy Corp"},"validFrom":"1990-07-01","validTo":"1994-11-27","current":false,"derived":true,"evidenceMineId":"1516910","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P17327|1990-07-01|C08701|1981-04-20|77961"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20831","name":"T J Mining Inc"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1994-11-28","validTo":"1997-01-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P20831|1994-11-28|1997-01-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14115","name":"John H  Parton"},"object":{"type":"operator","id":"P20831","name":"T J Mining Inc"},"validFrom":"1994-11-28","validTo":"1997-01-01","current":false,"derived":true,"evidenceMineId":"1516910","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P20831|1994-11-28|C14115|1990-02-01|92046"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P12091","name":"Sterling Energy Inc"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1997-01-02","validTo":"1997-11-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P12091|1997-01-02|1997-11-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08974","name":"Ball Ralph"},"object":{"type":"operator","id":"P12091","name":"Sterling Energy Inc"},"validFrom":"1997-01-02","validTo":"1997-11-02","current":false,"derived":true,"evidenceMineId":"1516910","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P12091|1997-01-02|C08974|1981-06-24|78574"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23849","name":"Hasco Inc"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1997-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P23849|1997-11-03|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14433","name":"James A  Hubbard"},"object":{"type":"mine","id":"1516910","name":"Sterling Mine"},"validFrom":"1997-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|C14433|1997-11-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14433","name":"James A  Hubbard"},"object":{"type":"operator","id":"P23849","name":"Hasco Inc"},"validFrom":"1997-11-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516910","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516910|P23849|1997-11-03|C14433|1997-11-03|92803"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516910","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}