{"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":"2026-10-17T05:35:58.500035+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":"4608777","name":"Leer South Preparation Plant"},"operator":{"type":"operator","id":"P23768","name":"Wolf Run Mining LLC"},"controller":{"type":"controller","id":"0189840","name":"Core Natural Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12472","name":"Anker Group Inc"},"object":{"type":"mine","id":"4608777","name":"Leer South Preparation Plant"},"validFrom":"1990-07-17","validTo":"2005-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|C12472|1990-07-17|2005-05-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23768","name":"Wolf Run Mining LLC"},"object":{"type":"mine","id":"4608777","name":"Leer South Preparation Plant"},"validFrom":"1999-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|P23768|1999-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12472","name":"Anker Group Inc"},"object":{"type":"operator","id":"P23768","name":"Wolf Run Mining LLC"},"validFrom":"1999-05-01","validTo":"2005-05-31","current":false,"derived":true,"evidenceMineId":"4608777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|P23768|1999-05-01|C12472|1990-07-17|87057"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0045307","name":"International Coal Group Inc (ICG)"},"object":{"type":"mine","id":"4608777","name":"Leer South Preparation Plant"},"validFrom":"2005-06-01","validTo":"2011-06-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|0045307|2005-06-01|2011-06-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0045307","name":"International Coal Group Inc (ICG)"},"object":{"type":"operator","id":"P23768","name":"Wolf Run Mining LLC"},"validFrom":"2005-06-01","validTo":"2011-06-14","current":false,"derived":true,"evidenceMineId":"4608777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|P23768|1999-05-01|0045307|2005-06-01|5339"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15561","name":"Arch Resources Inc"},"object":{"type":"mine","id":"4608777","name":"Leer South Preparation Plant"},"validFrom":"2011-06-15","validTo":"2025-01-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|C15561|2011-06-15|2025-01-13"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15561","name":"Arch Resources Inc"},"object":{"type":"operator","id":"P23768","name":"Wolf Run Mining LLC"},"validFrom":"2011-06-15","validTo":"2025-01-13","current":false,"derived":true,"evidenceMineId":"4608777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|P23768|1999-05-01|C15561|2011-06-15|96149"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0189840","name":"Core Natural Resources Inc"},"object":{"type":"mine","id":"4608777","name":"Leer South Preparation Plant"},"validFrom":"2025-01-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|0189840|2025-01-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0189840","name":"Core Natural Resources Inc"},"object":{"type":"operator","id":"P23768","name":"Wolf Run Mining LLC"},"validFrom":"2025-01-14","validTo":null,"current":true,"derived":true,"evidenceMineId":"4608777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4608777|P23768|1999-05-01|0189840|2025-01-14|40486"}}],"coverage":{"historyRecords":4,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4608777","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}