{"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":"4000170","name":"Immel Mine"},"operator":{"type":"operator","id":"0208493","name":"Crucible ETN LLC"},"controller":{"type":"controller","id":"0199521","name":"Korea Zinc Co Ltd"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00081","name":"Asarco Inc"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"1950-01-01","validTo":"1999-11-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|L00081|1950-01-01|1999-11-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00017","name":"Asarco Inc"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|M00017|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00017","name":"Asarco Inc"},"object":{"type":"operator","id":"L00081","name":"Asarco Inc"},"validFrom":"1950-01-01","validTo":"1999-11-16","current":false,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|L00081|1950-01-01|M00017|1950-01-01|101470"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17191","name":"Asarco Inc"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"1999-11-17","validTo":"2006-06-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|L17191|1999-11-17|2006-06-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13109","name":"Grupo Mexico S A B de C V"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"1999-11-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|M13109|1999-11-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13109","name":"Grupo Mexico S A B de C V"},"object":{"type":"operator","id":"L17191","name":"Asarco Inc"},"validFrom":"1999-11-17","validTo":"2006-06-08","current":false,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|L17191|1999-11-17|M13109|1999-11-17|155522"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0073683","name":"Nyrstar Tennessee Mines, Strawberry Plains LLC"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2006-06-09","validTo":"2026-04-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0073683|2006-06-09|2026-04-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0061709","name":"Tennessee Zinc Company LLC"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2006-06-09","validTo":"2009-12-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0061709|2006-06-09|2009-12-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0061709","name":"Tennessee Zinc Company LLC"},"object":{"type":"operator","id":"0073683","name":"Nyrstar Tennessee Mines, Strawberry Plains LLC"},"validFrom":"2006-06-09","validTo":"2009-12-06","current":false,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0073683|2006-06-09|0061709|2006-06-09|8276"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0086813","name":"Nyrstar NV"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2009-12-07","validTo":"2022-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0086813|2009-12-07|2022-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0086813","name":"Nyrstar NV"},"object":{"type":"operator","id":"0073683","name":"Nyrstar Tennessee Mines, Strawberry Plains LLC"},"validFrom":"2009-12-07","validTo":"2022-09-30","current":false,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0073683|2006-06-09|0086813|2009-12-07|13981"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0172300","name":"Nyrstar US Inc"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2022-10-01","validTo":"2024-10-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0172300|2022-10-01|2024-10-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0172300","name":"Nyrstar US Inc"},"object":{"type":"operator","id":"0073683","name":"Nyrstar Tennessee Mines, Strawberry Plains LLC"},"validFrom":"2022-10-01","validTo":"2024-10-23","current":false,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0073683|2006-06-09|0172300|2022-10-01|36638"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0188563","name":"Nyrstar Netherlands Holdings B.V."},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2024-10-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0188563|2024-10-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0188563","name":"Nyrstar Netherlands Holdings B.V."},"object":{"type":"operator","id":"0073683","name":"Nyrstar Tennessee Mines, Strawberry Plains LLC"},"validFrom":"2024-10-24","validTo":"2026-04-20","current":false,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0073683|2006-06-09|0188563|2024-10-24|40168"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0208493","name":"Crucible ETN LLC"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2026-04-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0208493|2026-04-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0199521","name":"Korea Zinc Co Ltd"},"object":{"type":"mine","id":"4000170","name":"Immel Mine"},"validFrom":"2026-04-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0199521|2026-04-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0199521","name":"Korea Zinc Co Ltd"},"object":{"type":"operator","id":"0208493","name":"Crucible ETN LLC"},"validFrom":"2026-04-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"4000170","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4000170|0208493|2026-04-21|0199521|2026-04-21|42499"}}],"coverage":{"historyRecords":7,"edgeCount":18,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4000170","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"}}