{"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":"5000430","name":"Van Horn Mine"},"operator":{"type":"operator","id":"0093385","name":"HC Contractors, LLC."},"controller":{"type":"controller","id":"0182020","name":"Ukpeagvik Inupiat Corporation; William J Hoople Trust dated 2-25-09"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09826","name":"Arctic Redimix"},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"1950-01-01","validTo":"1987-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|L09826|1950-01-01|1987-08-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07707","name":"Derickson Holt"},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"1950-01-01","validTo":"1987-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|M07707|1950-01-01|1987-08-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07707","name":"Derickson Holt"},"object":{"type":"operator","id":"L09826","name":"Arctic Redimix"},"validFrom":"1950-01-01","validTo":"1987-08-31","current":false,"derived":true,"evidenceMineId":"5000430","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|L09826|1950-01-01|M07707|1950-01-01|141794"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09827","name":"Mc Peak Sand & Gravel"},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"1987-09-01","validTo":"2021-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|L09827|1987-09-01|2021-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07708","name":"Mc Peak Roger"},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"1987-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|M07708|1987-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07708","name":"Mc Peak Roger"},"object":{"type":"operator","id":"L09827","name":"Mc Peak Sand & Gravel"},"validFrom":"1987-09-01","validTo":"2021-12-31","current":false,"derived":true,"evidenceMineId":"5000430","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|L09827|1987-09-01|M07708|1987-09-01|141795"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040850","name":"William J  Hoople"},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"2008-07-01","validTo":"2023-08-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|0040850|2008-07-01|2023-08-13"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0093385","name":"HC Contractors, LLC."},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"2022-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|0093385|2022-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040850","name":"William J  Hoople"},"object":{"type":"operator","id":"0093385","name":"HC Contractors, LLC."},"validFrom":"2022-01-01","validTo":"2023-08-13","current":false,"derived":true,"evidenceMineId":"5000430","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|0093385|2022-01-01|0040850|2008-07-01|817"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0182020","name":"Ukpeagvik Inupiat Corporation et al"},"object":{"type":"mine","id":"5000430","name":"Van Horn Mine"},"validFrom":"2023-08-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|0182020|2023-08-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0182020","name":"Ukpeagvik Inupiat Corporation et al"},"object":{"type":"operator","id":"0093385","name":"HC Contractors, LLC."},"validFrom":"2023-08-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"5000430","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|0093385|2022-01-01|0182020|2023-08-14|38881"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0182020","name":"William J Hoople Trust dated 2-25-09 et al"},"object":{"type":"operator","id":"0093385","name":"HC Contractors, LLC."},"validFrom":"2023-08-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"5000430","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5000430|0093385|2022-01-01|0182020|2023-08-14|38882"}}],"coverage":{"historyRecords":5,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5000430","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"}}