{"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":"1517873","name":"No 12-A"},"operator":{"type":"operator","id":"P24267","name":"Sunny Ridge Mining Company Inc"},"controller":{"type":"controller","id":"C06656","name":"Horizon Natural Resources Incorporated"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13154","name":"Thomas A  Potter et al"},"object":{"type":"mine","id":"1517873","name":"No 12-A"},"validFrom":"1987-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|C13154|1987-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19026","name":"Sunny Ridge Mining Company Inc"},"object":{"type":"mine","id":"1517873","name":"No 12-A"},"validFrom":"1996-11-01","validTo":"2000-07-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|P19026|1996-11-01|2000-07-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13154","name":"Thomas A  Potter et al"},"object":{"type":"operator","id":"P19026","name":"Sunny Ridge Mining Company Inc"},"validFrom":"1996-11-01","validTo":"2000-07-19","current":false,"derived":true,"evidenceMineId":"1517873","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|P19026|1996-11-01|C13154|1987-09-01|88751"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13154","name":"John M  Potter et al"},"object":{"type":"operator","id":"P19026","name":"Sunny Ridge Mining Company Inc"},"validFrom":"1996-11-01","validTo":"2000-07-19","current":false,"derived":true,"evidenceMineId":"1517873","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|P19026|1996-11-01|C13154|1987-09-01|88752"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06656","name":"Horizon Natural Resources Incorporated"},"object":{"type":"mine","id":"1517873","name":"No 12-A"},"validFrom":"1999-06-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|C06656|1999-06-08|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24267","name":"Sunny Ridge Mining Company Inc"},"object":{"type":"mine","id":"1517873","name":"No 12-A"},"validFrom":"2000-07-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|P24267|2000-07-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06656","name":"Horizon Natural Resources Incorporated"},"object":{"type":"operator","id":"P24267","name":"Sunny Ridge Mining Company Inc"},"validFrom":"2000-07-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"1517873","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1517873|P24267|2000-07-20|C06656|1999-06-08|72680"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1517873","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"}}