{"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":"1000947","name":"Mussel Shell Pit"},"operator":{"type":"operator","id":"L03000","name":"De Atley Company Inc"},"controller":{"type":"controller","id":"M02119","name":"Eucon Corporation"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02206","name":"U S Forest Service"},"object":{"type":"mine","id":"1000947","name":"Mussel Shell Pit"},"validFrom":"1950-01-01","validTo":"1978-11-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1000947|L02206|1950-01-01|1978-11-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01776","name":"United States Government"},"object":{"type":"mine","id":"1000947","name":"Mussel Shell Pit"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1000947|M01776|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01776","name":"United States Government"},"object":{"type":"operator","id":"L02206","name":"U S Forest Service"},"validFrom":"1950-01-01","validTo":"1978-11-29","current":false,"derived":true,"evidenceMineId":"1000947","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1000947|L02206|1950-01-01|M01776|1950-01-01|120938"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02119","name":"Eucon Corporation"},"object":{"type":"mine","id":"1000947","name":"Mussel Shell Pit"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1000947|M02119|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03000","name":"De Atley Company Inc"},"object":{"type":"mine","id":"1000947","name":"Mussel Shell Pit"},"validFrom":"1978-11-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1000947|L03000|1978-11-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02119","name":"Eucon Corporation"},"object":{"type":"operator","id":"L03000","name":"De Atley Company Inc"},"validFrom":"1978-11-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"1000947","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1000947|L03000|1978-11-30|M02119|1950-01-01|123774"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1000947","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"}}