{"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":"1509967","name":"Tipple No 1"},"operator":{"type":"operator","id":"P08167","name":"Reliance Coal Company Inc"},"controller":{"type":"controller","id":"C06227","name":"Basic American Industries"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P02511","name":"Freeport Mining Company Inc"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1976-09-16","validTo":"1978-11-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P02511|1976-09-16|1978-11-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00334","name":"Schwab Charles F"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1976-09-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|C00334|1976-09-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00334","name":"Schwab Charles F"},"object":{"type":"operator","id":"P02511","name":"Freeport Mining Company Inc"},"validFrom":"1976-09-16","validTo":"1978-11-26","current":false,"derived":true,"evidenceMineId":"1509967","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P02511|1976-09-16|C00334|1976-09-16|46212"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C06227","name":"Basic American Industries"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1978-04-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|C06227|1978-04-05|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10860","name":"Freeport Mining Company Inc"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1978-11-27","validTo":"1979-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P10860|1978-11-27|1979-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00117","name":"Falcon Seaboard Inc"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1978-11-27","validTo":"1979-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|C00117|1978-11-27|1979-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00117","name":"Falcon Seaboard Inc"},"object":{"type":"operator","id":"P10860","name":"Freeport Mining Company Inc"},"validFrom":"1978-11-27","validTo":"1979-01-31","current":false,"derived":true,"evidenceMineId":"1509967","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P10860|1978-11-27|C00117|1978-11-27|44311"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P11541","name":"Freeport Mining Company Inc"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1979-02-01","validTo":"1981-01-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P11541|1979-02-01|1981-01-13"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08600","name":"Diamond Shamrock Corp"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1979-02-01","validTo":"1981-01-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|C08600|1979-02-01|1981-01-13"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08600","name":"Diamond Shamrock Corp"},"object":{"type":"operator","id":"P11541","name":"Freeport Mining Company Inc"},"validFrom":"1979-02-01","validTo":"1981-01-13","current":false,"derived":true,"evidenceMineId":"1509967","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P11541|1979-02-01|C08600|1979-02-01|77752"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P08167","name":"Reliance Coal Company Inc"},"object":{"type":"mine","id":"1509967","name":"Tipple No 1"},"validFrom":"1981-01-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P08167|1981-01-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C06227","name":"Basic American Industries"},"object":{"type":"operator","id":"P08167","name":"Reliance Coal Company Inc"},"validFrom":"1981-01-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"1509967","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1509967|P08167|1981-01-14|C06227|1978-04-05|71257"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1509967","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"}}