{"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":"2026-10-17T05:35:58.500035+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":"4105309","name":"Alpine Silica-Kermit"},"operator":{"type":"operator","id":"0154314","name":"Alpine Silica, LLC"},"controller":{"type":"controller","id":"0171280","name":"Pro Frac Holding Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0154314","name":"Alpine Silica, LLC"},"object":{"type":"mine","id":"4105309","name":"Alpine Silica-Kermit"},"validFrom":"2017-11-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105309|0154314|2017-11-13|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0137421","name":"Wilks Brothers LLC"},"object":{"type":"mine","id":"4105309","name":"Alpine Silica-Kermit"},"validFrom":"2017-11-13","validTo":"2022-10-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105309|0137421|2017-11-13|2022-10-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137421","name":"Wilks Brothers LLC"},"object":{"type":"operator","id":"0154314","name":"Alpine Silica, LLC"},"validFrom":"2017-11-13","validTo":"2022-10-09","current":false,"derived":true,"evidenceMineId":"4105309","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105309|0154314|2017-11-13|0137421|2017-11-13|27794"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0171280","name":"Pro Frac Holding Corp"},"object":{"type":"mine","id":"4105309","name":"Alpine Silica-Kermit"},"validFrom":"2022-10-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105309|0171280|2022-10-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0171280","name":"Pro Frac Holding Corp"},"object":{"type":"operator","id":"0154314","name":"Alpine Silica, LLC"},"validFrom":"2022-10-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105309","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105309|0154314|2017-11-13|0171280|2022-10-10|36254"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4105309","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}