{"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":"1515983","name":"St. Helens Tipple"},"operator":{"type":"operator","id":"P13396","name":"Sturgeon Mining Co., Inc"},"controller":{"type":"controller","id":"C01822","name":"Robert L  Rosencrans"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01822","name":"Robert L  Rosencrans et al"},"object":{"type":"mine","id":"1515983","name":"St. Helens Tipple"},"validFrom":"1981-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|C01822|1981-02-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13396","name":"Sturgeon Mining Co., Inc."},"object":{"type":"mine","id":"1515983","name":"St. Helens Tipple"},"validFrom":"1987-04-01","validTo":"2012-02-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|P13396|1987-04-01|2012-02-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01822","name":"Robert L  Rosencrans et al"},"object":{"type":"operator","id":"P13396","name":"Sturgeon Mining Co., Inc."},"validFrom":"1987-04-01","validTo":"2012-02-27","current":false,"derived":true,"evidenceMineId":"1515983","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|P13396|1987-04-01|C01822|1981-02-01|56248"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0121670","name":"Jackson Processing Inc"},"object":{"type":"mine","id":"1515983","name":"St. Helens Tipple"},"validFrom":"2012-02-28","validTo":"2016-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|0121670|2012-02-28|2016-10-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0103393","name":"James Michael  Morris Jr"},"object":{"type":"mine","id":"1515983","name":"St. Helens Tipple"},"validFrom":"2012-02-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|0103393|2012-02-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0103393","name":"James Michael  Morris Jr"},"object":{"type":"operator","id":"0121670","name":"Jackson Processing Inc"},"validFrom":"2012-02-28","validTo":"2016-10-31","current":false,"derived":true,"evidenceMineId":"1515983","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|0121670|2012-02-28|0103393|2012-02-28|17823"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13396","name":"Sturgeon Mining Co., Inc"},"object":{"type":"mine","id":"1515983","name":"St. Helens Tipple"},"validFrom":"2016-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|P13396|2016-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01822","name":"Robert L  Rosencrans et al"},"object":{"type":"operator","id":"P13396","name":"Sturgeon Mining Co., Inc"},"validFrom":"2016-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1515983","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1515983|P13396|2016-11-01|C01822|1981-02-01|56249"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1515983","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"}}