{"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":"3401012","name":"Big (4) Pit"},"operator":{"type":"operator","id":"L09626","name":"Big (4) Pit"},"controller":{"type":"controller","id":"M07548","name":"Estell Thomas L"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07919","name":"John'S Trucking Inc"},"object":{"type":"mine","id":"3401012","name":"Big (4) Pit"},"validFrom":"1950-01-01","validTo":"1987-02-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401012|L07919|1950-01-01|1987-02-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06295","name":"Followwill Mike"},"object":{"type":"mine","id":"3401012","name":"Big (4) Pit"},"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":"3401012|M06295|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06295","name":"Followwill Mike"},"object":{"type":"operator","id":"L07919","name":"John'S Trucking Inc"},"validFrom":"1950-01-01","validTo":"1987-02-05","current":false,"derived":true,"evidenceMineId":"3401012","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401012|L07919|1950-01-01|M06295|1950-01-01|138110"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09626","name":"Big (4) Pit"},"object":{"type":"mine","id":"3401012","name":"Big (4) Pit"},"validFrom":"1987-02-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401012|L09626|1987-02-06|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07548","name":"Estell Thomas L Et Al"},"object":{"type":"mine","id":"3401012","name":"Big (4) Pit"},"validFrom":"1987-02-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401012|M07548|1987-02-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07548","name":"Estell Thomas L Et Al"},"object":{"type":"operator","id":"L09626","name":"Big (4) Pit"},"validFrom":"1987-02-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"3401012","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3401012|L09626|1987-02-06|M07548|1987-02-06|141489"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3401012","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"}}