{"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":"1202464","name":"Napoleon Quarry"},"operator":{"type":"operator","id":"0129114","name":"Rock Valley Stone Inc."},"controller":{"type":"controller","id":"0109783","name":"Tim L  Friend; William L  Friend"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0129114","name":"Rock Valley Stone Inc."},"object":{"type":"mine","id":"1202464","name":"Napoleon Quarry"},"validFrom":"2013-06-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202464|0129114|2013-06-25|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0109783","name":"Tim L  Friend et al"},"object":{"type":"mine","id":"1202464","name":"Napoleon Quarry"},"validFrom":"2013-06-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202464|0109783|2013-06-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0109783","name":"Tim L  Friend et al"},"object":{"type":"operator","id":"0129114","name":"Rock Valley Stone Inc."},"validFrom":"2013-06-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1202464","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202464|0129114|2013-06-25|0109783|2013-06-25|20029"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0109783","name":"William L  Friend et al"},"object":{"type":"operator","id":"0129114","name":"Rock Valley Stone Inc."},"validFrom":"2013-06-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1202464","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202464|0129114|2013-06-25|0109783|2013-06-25|20030"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1202464","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"}}