{"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":"3301610","name":"NORWALK SAND & GRAVEL"},"operator":{"type":"operator","id":"L06514","name":"Rogers Group Inc"},"controller":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"mine","id":"3301610","name":"NORWALK SAND & GRAVEL"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3301610|M00452|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01287","name":"Price Companies"},"object":{"type":"mine","id":"3301610","name":"NORWALK SAND & GRAVEL"},"validFrom":"1950-01-01","validTo":"1990-09-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3301610|L01287|1950-01-01|1990-09-11"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01133","name":"Robert C Price"},"object":{"type":"mine","id":"3301610","name":"NORWALK SAND & GRAVEL"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3301610|M01133|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01133","name":"Robert C Price"},"object":{"type":"operator","id":"L01287","name":"Price Companies"},"validFrom":"1950-01-01","validTo":"1990-09-11","current":false,"derived":true,"evidenceMineId":"3301610","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3301610|L01287|1950-01-01|M01133|1950-01-01|116983"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06514","name":"Rogers Group Inc"},"object":{"type":"mine","id":"3301610","name":"NORWALK SAND & GRAVEL"},"validFrom":"1990-09-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3301610|L06514|1990-09-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"operator","id":"L06514","name":"Rogers Group Inc"},"validFrom":"1990-09-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"3301610","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"3301610|L06514|1990-09-12|M00452|1950-01-01|111157"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3301610","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"}}