{"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":"2026-10-13T11:19:05.459773+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":"3605122","name":"Shade No 3"},"operator":{"type":"operator","id":"P18314","name":"Shade Mining Company"},"controller":{"type":"controller","id":"C12771","name":"Donald R  Hoffman"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05574","name":"Shade Mining Company"},"object":{"type":"mine","id":"3605122","name":"Shade No 3"},"validFrom":"1974-09-13","validTo":"1986-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3605122|P05574|1974-09-13|1986-10-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04642","name":"Alberter Barry M"},"object":{"type":"mine","id":"3605122","name":"Shade No 3"},"validFrom":"1974-09-13","validTo":"1986-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3605122|C04642|1974-09-13|1986-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04642","name":"Alberter Barry M"},"object":{"type":"operator","id":"P05574","name":"Shade Mining Company"},"validFrom":"1974-09-13","validTo":"1986-10-31","current":false,"derived":true,"evidenceMineId":"3605122","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3605122|P05574|1974-09-13|C04642|1974-09-13|66359"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18314","name":"Shade Mining Company"},"object":{"type":"mine","id":"3605122","name":"Shade No 3"},"validFrom":"1986-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3605122|P18314|1986-11-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12771","name":"Donald R  Hoffman"},"object":{"type":"mine","id":"3605122","name":"Shade No 3"},"validFrom":"1986-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3605122|C12771|1986-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12771","name":"Donald R  Hoffman"},"object":{"type":"operator","id":"P18314","name":"Shade Mining Company"},"validFrom":"1986-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3605122","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3605122|P18314|1986-11-01|C12771|1986-11-01|87880"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3605122","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}