{"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":"2026-10-18T09:31:49.615908+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":"0200498","name":"Cyprus Tohono Corporation"},"operator":{"type":"operator","id":"L13516","name":"Cyprus Tohono Corp"},"controller":{"type":"controller","id":"0067299","name":"Freeport-McMoRan Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00049","name":"Hecla Mining Company"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"1950-01-01","validTo":"1979-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L00049|1950-01-01|1979-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00089","name":"Hecla Mining Company"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|M00089|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00089","name":"Hecla Mining Company"},"object":{"type":"operator","id":"L00049","name":"Hecla Mining Company"},"validFrom":"1950-01-01","validTo":"1979-03-31","current":false,"derived":true,"evidenceMineId":"0200498","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L00049|1950-01-01|M00089|1950-01-01|103980"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05728","name":"Noranda Lakeshore Mines Inc"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"1979-04-01","validTo":"1987-07-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L05728|1979-04-01|1987-07-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03045","name":"Noranda Inc"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"1979-04-01","validTo":"1987-07-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|M03045|1979-04-01|1987-07-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03045","name":"Noranda Inc"},"object":{"type":"operator","id":"L05728","name":"Noranda Lakeshore Mines Inc"},"validFrom":"1979-04-01","validTo":"1987-07-23","current":false,"derived":true,"evidenceMineId":"0200498","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L05728|1979-04-01|M03045|1979-04-01|127784"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13516","name":"Cyprus Tohono Corp"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"1987-07-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L13516|1987-07-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03644","name":"Cyprus Amax Minerals Company"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"1987-07-24","validTo":"2002-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|M03644|1987-07-24|2002-04-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03644","name":"Cyprus Amax Minerals Company"},"object":{"type":"operator","id":"L13516","name":"Cyprus Tohono Corp"},"validFrom":"1987-07-24","validTo":"2002-04-30","current":false,"derived":true,"evidenceMineId":"0200498","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L13516|1987-07-24|M03644|1987-07-24|129678"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00136","name":"Phelps Dodge Corp"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"2002-05-01","validTo":"2007-03-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|M00136|2002-05-01|2007-03-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00136","name":"Phelps Dodge Corp"},"object":{"type":"operator","id":"L13516","name":"Cyprus Tohono Corp"},"validFrom":"2002-05-01","validTo":"2007-03-18","current":false,"derived":true,"evidenceMineId":"0200498","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L13516|1987-07-24|M00136|2002-05-01|105041"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0067299","name":"Freeport-McMoRan Inc"},"object":{"type":"mine","id":"0200498","name":"Cyprus Tohono Corporation"},"validFrom":"2007-03-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|0067299|2007-03-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0067299","name":"Freeport-McMoRan Inc"},"object":{"type":"operator","id":"L13516","name":"Cyprus Tohono Corp"},"validFrom":"2007-03-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"0200498","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0200498|L13516|1987-07-24|0067299|2007-03-19|9391"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0200498","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}