{"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":"2026-10-17T05:35:58.500035+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":"3605904","name":"Darmac Strip West Lebanon"},"operator":{"type":"operator","id":"P07140","name":"Darmac Coal Inc"},"controller":{"type":"controller","id":"C05912","name":"Liperote John"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P04879","name":"West Lebanon Coal Inc"},"object":{"type":"mine","id":"3605904","name":"Darmac Strip West Lebanon"},"validFrom":"1976-02-01","validTo":"1978-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|P04879|1976-02-01|1978-06-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04034","name":"Bartony Harry E"},"object":{"type":"mine","id":"3605904","name":"Darmac Strip West Lebanon"},"validFrom":"1976-02-01","validTo":"1978-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|C04034|1976-02-01|1978-06-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04034","name":"Bartony Harry E"},"object":{"type":"operator","id":"P04879","name":"West Lebanon Coal Inc"},"validFrom":"1976-02-01","validTo":"1978-06-22","current":false,"derived":true,"evidenceMineId":"3605904","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|P04879|1976-02-01|C04034|1976-02-01|64625"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05912","name":"Liperote John Et Al"},"object":{"type":"mine","id":"3605904","name":"Darmac Strip West Lebanon"},"validFrom":"1977-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|C05912|1977-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P09087","name":"Virginia Coal Company Inc"},"object":{"type":"mine","id":"3605904","name":"Darmac Strip West Lebanon"},"validFrom":"1978-06-23","validTo":"1979-10-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|P09087|1978-06-23|1979-10-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06637","name":"Virginia Coal Company Inc"},"object":{"type":"mine","id":"3605904","name":"Darmac Strip West Lebanon"},"validFrom":"1978-06-23","validTo":"1979-10-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|C06637|1978-06-23|1979-10-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06637","name":"Virginia Coal Company Inc"},"object":{"type":"operator","id":"P09087","name":"Virginia Coal Company Inc"},"validFrom":"1978-06-23","validTo":"1979-10-03","current":false,"derived":true,"evidenceMineId":"3605904","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|P09087|1978-06-23|C06637|1978-06-23|72391"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07140","name":"Darmac Coal Inc"},"object":{"type":"mine","id":"3605904","name":"Darmac Strip West Lebanon"},"validFrom":"1979-10-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|P07140|1979-10-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05912","name":"Liperote John Et Al"},"object":{"type":"operator","id":"P07140","name":"Darmac Coal Inc"},"validFrom":"1979-10-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"3605904","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3605904|P07140|1979-10-04|C05912|1977-08-01|70250"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3605904","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}