{"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":"0101702","name":"Gibbs No 2"},"operator":{"type":"operator","id":"P10557","name":"Sand Mountain Minerals Inc"},"controller":{"type":"controller","id":"C02046","name":"MidAmerican Energy Holdings Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04389","name":"Gibbs Don"},"object":{"type":"mine","id":"0101702","name":"Gibbs No 2"},"validFrom":"1976-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101702|C04389|1976-12-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05304","name":"Sand Mountain Mineral Company"},"object":{"type":"mine","id":"0101702","name":"Gibbs No 2"},"validFrom":"1977-01-01","validTo":"1980-03-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101702|P05304|1977-01-01|1980-03-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04389","name":"Gibbs Don"},"object":{"type":"operator","id":"P05304","name":"Sand Mountain Mineral Company"},"validFrom":"1977-01-01","validTo":"1980-03-24","current":false,"derived":true,"evidenceMineId":"0101702","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101702|P05304|1977-01-01|C04389|1976-12-01|65864"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10557","name":"Sand Mountain Minerals Inc"},"object":{"type":"mine","id":"0101702","name":"Gibbs No 2"},"validFrom":"1980-03-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101702|P10557|1980-03-25|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02046","name":"MidAmerican Energy Holdings Company"},"object":{"type":"mine","id":"0101702","name":"Gibbs No 2"},"validFrom":"1980-03-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101702|C02046|1980-03-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02046","name":"MidAmerican Energy Holdings Company"},"object":{"type":"operator","id":"P10557","name":"Sand Mountain Minerals Inc"},"validFrom":"1980-03-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"0101702","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0101702|P10557|1980-03-25|C02046|1980-03-25|57269"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0101702","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"}}