{"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":"4604631","name":"No 1"},"operator":{"type":"operator","id":"P02818","name":"H & J Coal Company"},"controller":{"type":"controller","id":"C03923","name":"Sanson Herschel"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00613","name":"Occidental Petroleum Corp"},"object":{"type":"mine","id":"4604631","name":"No 1"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|C00613|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P04476","name":"Martin-Parsley Mining Company Inc"},"object":{"type":"mine","id":"4604631","name":"No 1"},"validFrom":"1975-06-01","validTo":"1977-03-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|P04476|1975-06-01|1977-03-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03685","name":"Parsley Conley"},"object":{"type":"mine","id":"4604631","name":"No 1"},"validFrom":"1975-06-01","validTo":"1977-03-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|C03685|1975-06-01|1977-03-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03685","name":"Parsley Conley"},"object":{"type":"operator","id":"P04476","name":"Martin-Parsley Mining Company Inc"},"validFrom":"1975-06-01","validTo":"1977-03-06","current":false,"derived":true,"evidenceMineId":"4604631","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|P04476|1975-06-01|C03685|1975-06-01|63564"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00737","name":"Island Creek Coal Company"},"object":{"type":"mine","id":"4604631","name":"No 1"},"validFrom":"1977-03-07","validTo":"1979-05-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|P00737|1977-03-07|1979-05-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00613","name":"Occidental Petroleum Corp"},"object":{"type":"operator","id":"P00737","name":"Island Creek Coal Company"},"validFrom":"1977-03-07","validTo":"1979-05-20","current":false,"derived":true,"evidenceMineId":"4604631","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|P00737|1977-03-07|C00613|1950-01-01|48546"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02818","name":"H & J Coal Company"},"object":{"type":"mine","id":"4604631","name":"No 1"},"validFrom":"1979-05-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|P02818|1979-05-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03923","name":"Sanson Herschel"},"object":{"type":"mine","id":"4604631","name":"No 1"},"validFrom":"1979-05-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|C03923|1979-05-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03923","name":"Sanson Herschel"},"object":{"type":"operator","id":"P02818","name":"H & J Coal Company"},"validFrom":"1979-05-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"4604631","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4604631|P02818|1979-05-21|C03923|1979-05-21|64240"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4604631","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"}}