{"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":"1512169","name":"No 1 Tipple"},"operator":{"type":"operator","id":"P17153","name":"River Canyon Coal Sales Inc"},"controller":{"type":"controller","id":"C10358","name":"Hammond Chealis"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10130","name":"Hopson Enterprises Inc"},"object":{"type":"mine","id":"1512169","name":"No 1 Tipple"},"validFrom":"1979-11-01","validTo":"1984-10-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|P10130|1979-11-01|1984-10-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C07771","name":"Hopson Jim"},"object":{"type":"mine","id":"1512169","name":"No 1 Tipple"},"validFrom":"1979-11-01","validTo":"1984-10-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|C07771|1979-11-01|1984-10-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C07771","name":"Hopson Jim"},"object":{"type":"operator","id":"P10130","name":"Hopson Enterprises Inc"},"validFrom":"1979-11-01","validTo":"1984-10-09","current":false,"derived":true,"evidenceMineId":"1512169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|P10130|1979-11-01|C07771|1979-11-01|75658"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16343","name":"Billy'S Block & Stoker Coal"},"object":{"type":"mine","id":"1512169","name":"No 1 Tipple"},"validFrom":"1984-10-10","validTo":"1985-09-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|P16343|1984-10-10|1985-09-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11791","name":"Billy M  Ward"},"object":{"type":"mine","id":"1512169","name":"No 1 Tipple"},"validFrom":"1984-10-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|C11791|1984-10-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11791","name":"Billy M  Ward"},"object":{"type":"operator","id":"P16343","name":"Billy'S Block & Stoker Coal"},"validFrom":"1984-10-10","validTo":"1985-09-22","current":false,"derived":true,"evidenceMineId":"1512169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|P16343|1984-10-10|C11791|1984-10-10|85431"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P17153","name":"River Canyon Coal Sales Inc"},"object":{"type":"mine","id":"1512169","name":"No 1 Tipple"},"validFrom":"1985-09-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|P17153|1985-09-23|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10358","name":"Hammond Chealis"},"object":{"type":"mine","id":"1512169","name":"No 1 Tipple"},"validFrom":"1985-09-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|C10358|1985-09-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10358","name":"Hammond Chealis"},"object":{"type":"operator","id":"P17153","name":"River Canyon Coal Sales Inc"},"validFrom":"1985-09-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"1512169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1512169|P17153|1985-09-23|C10358|1985-09-23|81825"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1512169","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"}}