{"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":"4605450","name":"No 2"},"operator":{"type":"operator","id":"P06992","name":"Heritage Development Company"},"controller":{"type":"controller","id":"C05796","name":"Tipperary Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03081","name":"Fox Andrew E"},"object":{"type":"mine","id":"4605450","name":"No 2"},"validFrom":"1976-06-08","validTo":"1977-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605450|C03081|1976-06-08|1977-09-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P03740","name":"Heritage Development Company"},"object":{"type":"mine","id":"4605450","name":"No 2"},"validFrom":"1977-03-01","validTo":"1977-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605450|P03740|1977-03-01|1977-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03081","name":"Fox Andrew E"},"object":{"type":"operator","id":"P03740","name":"Heritage Development Company"},"validFrom":"1977-03-01","validTo":"1977-09-30","current":false,"derived":true,"evidenceMineId":"4605450","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605450|P03740|1977-03-01|C03081|1976-06-08|61902"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06992","name":"Heritage Development Company"},"object":{"type":"mine","id":"4605450","name":"No 2"},"validFrom":"1977-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605450|P06992|1977-10-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05796","name":"Tipperary Corp"},"object":{"type":"mine","id":"4605450","name":"No 2"},"validFrom":"1977-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605450|C05796|1977-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05796","name":"Tipperary Corp"},"object":{"type":"operator","id":"P06992","name":"Heritage Development Company"},"validFrom":"1977-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4605450","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4605450|P06992|1977-10-01|C05796|1977-10-01|69911"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4605450","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"}}