{"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":"0102457","name":"Arnold Mine"},"operator":{"type":"operator","id":"P14646","name":"Buckhorn Processing Company"},"controller":{"type":"controller","id":"C10608","name":"Rogers John F Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05439","name":"Quick Hershel A"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1977-06-01","validTo":"1983-09-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|C05439|1977-06-01|1983-09-12"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P06554","name":"Q & R Coal Company Inc"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1982-03-01","validTo":"1983-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P06554|1982-03-01|1983-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05439","name":"Quick Hershel A"},"object":{"type":"operator","id":"P06554","name":"Q & R Coal Company Inc"},"validFrom":"1982-03-01","validTo":"1983-06-30","current":false,"derived":true,"evidenceMineId":"0102457","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P06554|1982-03-01|C05439|1977-06-01|68824"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14646","name":"Buckhorn Processing Company"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1983-07-01","validTo":"1984-06-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P14646|1983-07-01|1984-06-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10608","name":"Rogers John F Jr"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1983-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|C10608|1983-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10608","name":"Rogers John F Jr"},"object":{"type":"operator","id":"P14646","name":"Buckhorn Processing Company"},"validFrom":"1983-07-01","validTo":"1984-06-28","current":false,"derived":true,"evidenceMineId":"0102457","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P14646|1983-07-01|C10608|1983-07-01|82410"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15798","name":"Bullock Mining Company Inc"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1984-06-29","validTo":"1984-09-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P15798|1984-06-29|1984-09-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11297","name":"Frank C  Mann"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1984-06-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|C11297|1984-06-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11297","name":"Frank C  Mann"},"object":{"type":"operator","id":"P15798","name":"Bullock Mining Company Inc"},"validFrom":"1984-06-29","validTo":"1984-09-26","current":false,"derived":true,"evidenceMineId":"0102457","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P15798|1984-06-29|C11297|1984-06-29|84271"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14646","name":"Buckhorn Processing Company"},"object":{"type":"mine","id":"0102457","name":"Arnold Mine"},"validFrom":"1984-09-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P14646|1984-09-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10608","name":"Rogers John F Jr"},"object":{"type":"operator","id":"P14646","name":"Buckhorn Processing Company"},"validFrom":"1984-09-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102457","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102457|P14646|1984-09-27|C10608|1983-07-01|82411"}}],"coverage":{"historyRecords":4,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102457","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"}}