{"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":"3200413","name":"White Clay & Sand Pit"},"operator":{"type":"operator","id":"L04662","name":"Portney Construction"},"controller":{"type":"controller","id":"M03762","name":"Portney Doug"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01211","name":"Richter Construction Company"},"object":{"type":"mine","id":"3200413","name":"White Clay & Sand Pit"},"validFrom":"1950-01-01","validTo":"1980-11-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200413|L01211|1950-01-01|1980-11-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01057","name":"Richter Wayne"},"object":{"type":"mine","id":"3200413","name":"White Clay & Sand Pit"},"validFrom":"1950-01-01","validTo":"1980-11-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200413|M01057|1950-01-01|1980-11-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01057","name":"Richter Wayne"},"object":{"type":"operator","id":"L01211","name":"Richter Construction Company"},"validFrom":"1950-01-01","validTo":"1980-11-04","current":false,"derived":true,"evidenceMineId":"3200413","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200413|L01211|1950-01-01|M01057|1950-01-01|116610"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03762","name":"Portney Doug"},"object":{"type":"mine","id":"3200413","name":"White Clay & Sand Pit"},"validFrom":"1980-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200413|M03762|1980-10-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04662","name":"Portney Construction"},"object":{"type":"mine","id":"3200413","name":"White Clay & Sand Pit"},"validFrom":"1980-11-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200413|L04662|1980-11-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03762","name":"Portney Doug"},"object":{"type":"operator","id":"L04662","name":"Portney Construction"},"validFrom":"1980-11-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"3200413","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3200413|L04662|1980-11-05|M03762|1980-10-01|130001"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3200413","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"}}