{"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":"4002364","name":"Donald Nunley"},"operator":{"type":"operator","id":"P16638","name":"D & B Mining Inc"},"controller":{"type":"controller","id":"C11809","name":"Nunley Donald"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02210","name":"Jessie Shipley Coal Company"},"object":{"type":"mine","id":"4002364","name":"Donald Nunley"},"validFrom":"1977-12-01","validTo":"1985-03-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002364|P02210|1977-12-01|1985-03-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01892","name":"Shipley Jessie"},"object":{"type":"mine","id":"4002364","name":"Donald Nunley"},"validFrom":"1977-12-01","validTo":"1988-12-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002364|C01892|1977-12-01|1988-12-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01892","name":"Shipley Jessie"},"object":{"type":"operator","id":"P02210","name":"Jessie Shipley Coal Company"},"validFrom":"1977-12-01","validTo":"1985-03-28","current":false,"derived":true,"evidenceMineId":"4002364","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002364|P02210|1977-12-01|C01892|1977-12-01|56721"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16638","name":"D & B Mining Inc"},"object":{"type":"mine","id":"4002364","name":"Donald Nunley"},"validFrom":"1985-03-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002364|P16638|1985-03-29|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11809","name":"Nunley Donald"},"object":{"type":"mine","id":"4002364","name":"Donald Nunley"},"validFrom":"1985-03-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002364|C11809|1985-03-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11809","name":"Nunley Donald"},"object":{"type":"operator","id":"P16638","name":"D & B Mining Inc"},"validFrom":"1985-03-29","validTo":null,"current":true,"derived":true,"evidenceMineId":"4002364","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4002364|P16638|1985-03-29|C11809|1985-03-29|85476"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4002364","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"}}