{"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":"2902025","name":"Harkey Pit"},"operator":{"type":"operator","id":"L09984","name":"Bonnell Sand & Gravel"},"controller":{"type":"controller","id":"0107561","name":"Joel  Bonnell"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07820","name":"David  Bonnell"},"object":{"type":"mine","id":"2902025","name":"Harkey Pit"},"validFrom":"1950-01-01","validTo":"2012-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902025|M07820|1950-01-01|2012-12-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09984","name":"Bonnell Sand & Gravel"},"object":{"type":"mine","id":"2902025","name":"Harkey Pit"},"validFrom":"1988-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902025|L09984|1988-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07820","name":"David  Bonnell"},"object":{"type":"operator","id":"L09984","name":"Bonnell Sand & Gravel"},"validFrom":"1988-03-01","validTo":"2012-12-31","current":false,"derived":true,"evidenceMineId":"2902025","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902025|L09984|1988-03-01|M07820|1950-01-01|142009"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0107561","name":"Joel  Bonnell"},"object":{"type":"mine","id":"2902025","name":"Harkey Pit"},"validFrom":"2013-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902025|0107561|2013-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0107561","name":"Joel  Bonnell"},"object":{"type":"operator","id":"L09984","name":"Bonnell Sand & Gravel"},"validFrom":"2013-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2902025","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2902025|L09984|1988-03-01|0107561|2013-01-01|19249"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2902025","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"}}