{"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":"1515099","name":"No 7 Mine"},"operator":{"type":"operator","id":"P18079","name":"C Y Smith Inc"},"controller":{"type":"controller","id":"C12231","name":"Smith C Y"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05114","name":"Payne Carl Et Al"},"object":{"type":"mine","id":"1515099","name":"No 7 Mine"},"validFrom":"1977-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515099|C05114|1977-03-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06134","name":"P & P Coal Company"},"object":{"type":"mine","id":"1515099","name":"No 7 Mine"},"validFrom":"1985-03-01","validTo":"1987-03-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515099|P06134|1985-03-01|1987-03-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05114","name":"Payne Carl Et Al"},"object":{"type":"operator","id":"P06134","name":"P & P Coal Company"},"validFrom":"1985-03-01","validTo":"1987-03-09","current":false,"derived":true,"evidenceMineId":"1515099","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515099|P06134|1985-03-01|C05114|1977-03-01|67567"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12231","name":"Smith C Y"},"object":{"type":"mine","id":"1515099","name":"No 7 Mine"},"validFrom":"1986-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515099|C12231|1986-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18079","name":"C Y Smith Inc"},"object":{"type":"mine","id":"1515099","name":"No 7 Mine"},"validFrom":"1987-03-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515099|P18079|1987-03-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12231","name":"Smith C Y"},"object":{"type":"operator","id":"P18079","name":"C Y Smith Inc"},"validFrom":"1987-03-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515099","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515099|P18079|1987-03-10|C12231|1986-01-01|86434"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515099","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"}}