{"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":"4402398","name":"CUSTOM SAND & GRAVEL"},"operator":{"type":"operator","id":"L07301","name":"Custom Ltd"},"controller":{"type":"controller","id":"M05810","name":"Mary Schreiber  Cox"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07300","name":"J R Parker & Company"},"object":{"type":"mine","id":"4402398","name":"CUSTOM SAND & GRAVEL"},"validFrom":"1950-01-01","validTo":"1984-08-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4402398|L07300|1950-01-01|1984-08-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05809","name":"Parker J Russell Jr"},"object":{"type":"mine","id":"4402398","name":"CUSTOM SAND & GRAVEL"},"validFrom":"1950-01-01","validTo":"1984-08-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4402398|M05809|1950-01-01|1984-08-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05809","name":"Parker J Russell Jr"},"object":{"type":"operator","id":"L07300","name":"J R Parker & Company"},"validFrom":"1950-01-01","validTo":"1984-08-06","current":false,"derived":true,"evidenceMineId":"4402398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4402398|L07300|1950-01-01|M05809|1950-01-01|135473"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07301","name":"Custom Ltd"},"object":{"type":"mine","id":"4402398","name":"CUSTOM SAND & GRAVEL"},"validFrom":"1984-08-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4402398|L07301|1984-08-07|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05810","name":"Mary Schreiber  Cox  et al"},"object":{"type":"mine","id":"4402398","name":"CUSTOM SAND & GRAVEL"},"validFrom":"1984-08-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4402398|M05810|1984-08-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05810","name":"Mary Schreiber  Cox  et al"},"object":{"type":"operator","id":"L07301","name":"Custom Ltd"},"validFrom":"1984-08-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"4402398","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4402398|L07301|1984-08-07|M05810|1984-08-07|135474"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4402398","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"}}