{"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":"1514281","name":"No 4 Surface"},"operator":{"type":"operator","id":"P07581","name":"Ruth Contracting Corp"},"controller":{"type":"controller","id":"C06207","name":"Ruth David L"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06207","name":"Ruth David L"},"object":{"type":"mine","id":"1514281","name":"No 4 Surface"},"validFrom":"1978-02-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514281|C06207|1978-02-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P07581","name":"Ruth Contracting Corp"},"object":{"type":"mine","id":"1514281","name":"No 4 Surface"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514281|P07581|1983-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06207","name":"Ruth David L"},"object":{"type":"operator","id":"P07581","name":"Ruth Contracting Corp"},"validFrom":"1983-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1514281","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1514281|P07581|1983-10-01|C06207|1978-02-16|71207"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1514281","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"}}