{"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":"1001838","name":"Portable"},"operator":{"type":"operator","id":"L17670","name":"Leroy Howell"},"controller":{"type":"controller","id":"M13480","name":"Leroy  Howell"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L40093","name":"Welch'S Rock"},"object":{"type":"mine","id":"1001838","name":"Portable"},"validFrom":"1988-09-01","validTo":"1998-04-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|L40093|1988-09-01|1998-04-07"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M40093","name":"Abie O  Welch"},"object":{"type":"mine","id":"1001838","name":"Portable"},"validFrom":"1988-09-01","validTo":"1998-04-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|M40093|1988-09-01|1998-04-07"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M40093","name":"Abie O  Welch"},"object":{"type":"operator","id":"L40093","name":"Welch'S Rock"},"validFrom":"1988-09-01","validTo":"1998-04-07","current":false,"derived":true,"evidenceMineId":"1001838","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|L40093|1988-09-01|M40093|1988-09-01|169729"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15819","name":"Wmc Rock"},"object":{"type":"mine","id":"1001838","name":"Portable"},"validFrom":"1998-04-08","validTo":"2000-05-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|L15819|1998-04-08|2000-05-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12058","name":"Warren E  Meisner"},"object":{"type":"mine","id":"1001838","name":"Portable"},"validFrom":"1998-04-08","validTo":"2000-05-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|M12058|1998-04-08|2000-05-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12058","name":"Warren E  Meisner"},"object":{"type":"operator","id":"L15819","name":"Wmc Rock"},"validFrom":"1998-04-08","validTo":"2000-05-16","current":false,"derived":true,"evidenceMineId":"1001838","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|L15819|1998-04-08|M12058|1998-04-08|153035"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17670","name":"Leroy Howell"},"object":{"type":"mine","id":"1001838","name":"Portable"},"validFrom":"2000-05-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|L17670|2000-05-17|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13480","name":"Leroy  Howell"},"object":{"type":"mine","id":"1001838","name":"Portable"},"validFrom":"2000-05-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|M13480|2000-05-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13480","name":"Leroy  Howell"},"object":{"type":"operator","id":"L17670","name":"Leroy Howell"},"validFrom":"2000-05-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"1001838","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001838|L17670|2000-05-17|M13480|2000-05-17|156332"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1001838","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"}}