{"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":"2026-10-18T09:31:49.615908+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":"2302163","name":"Tiger Mine"},"operator":{"type":"operator","id":"P23858","name":"Midwest Coal Llc"},"controller":{"type":"controller","id":"C15659","name":"Michael G  King; Steve  Stipanovich"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23858","name":"Midwest Coal Llc"},"object":{"type":"mine","id":"2302163","name":"Tiger Mine"},"validFrom":"1997-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302163|P23858|1997-12-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15659","name":"Steve  Stipanovich et al"},"object":{"type":"mine","id":"2302163","name":"Tiger Mine"},"validFrom":"1997-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302163|C15659|1997-12-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15659","name":"Steve  Stipanovich et al"},"object":{"type":"operator","id":"P23858","name":"Midwest Coal Llc"},"validFrom":"1997-12-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2302163","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302163|P23858|1997-12-01|C15659|1997-12-01|96458"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15659","name":"Michael G  King et al"},"object":{"type":"operator","id":"P23858","name":"Midwest Coal Llc"},"validFrom":"1997-12-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2302163","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302163|P23858|1997-12-01|C15659|1997-12-01|96459"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2302163","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}