{"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":"4603158","name":"Keystone No 2 Plant"},"operator":{"type":"operator","id":"0051178","name":"Herndon Processing Company LLC"},"controller":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00481","name":"Kennie Ray  Childers"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"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":"4603158|C00481|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01037","name":"Eastern Associated Coal Corp"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"1950-01-01","validTo":"1986-08-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P01037|1950-01-01|1986-08-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00880","name":"Eastern Gas & Fuel Association"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"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":"4603158|C00880|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00880","name":"Eastern Gas & Fuel Association"},"object":{"type":"operator","id":"P01037","name":"Eastern Associated Coal Corp"},"validFrom":"1950-01-01","validTo":"1986-08-20","current":false,"derived":true,"evidenceMineId":"4603158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P01037|1950-01-01|C00880|1950-01-01|50776"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P00746","name":"Genoa Coal Company Inc"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"1986-08-21","validTo":"1987-09-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P00746|1986-08-21|1987-09-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00481","name":"Kennie Ray  Childers"},"object":{"type":"operator","id":"P00746","name":"Genoa Coal Company Inc"},"validFrom":"1986-08-21","validTo":"1987-09-10","current":false,"derived":true,"evidenceMineId":"4603158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P00746|1986-08-21|C00481|1950-01-01|47483"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19033","name":"Benafuels Inc"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"1987-09-11","validTo":"1990-08-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P19033|1987-09-11|1990-08-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12678","name":"Bruce R  Davis"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"1987-09-11","validTo":"1990-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|C12678|1987-09-11|1990-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12678","name":"Bruce R  Davis"},"object":{"type":"operator","id":"P19033","name":"Benafuels Inc"},"validFrom":"1987-09-11","validTo":"1990-08-08","current":false,"derived":true,"evidenceMineId":"4603158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P19033|1987-09-11|C12678|1987-09-11|87647"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21111","name":"Herndon Processing Company"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"1990-08-09","validTo":"2003-03-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P21111|1990-08-09|2003-03-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12752","name":"American Metals & Coal International Inc"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"1990-08-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|C12752|1990-08-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12752","name":"American Metals & Coal International Inc"},"object":{"type":"operator","id":"P21111","name":"Herndon Processing Company"},"validFrom":"1990-08-09","validTo":"2003-03-10","current":false,"derived":true,"evidenceMineId":"4603158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|P21111|1990-08-09|C12752|1990-08-09|87773"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051178","name":"Herndon Processing Company LLC"},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"2003-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|0051178|2003-03-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"mine","id":"4603158","name":"Keystone No 2 Plant"},"validFrom":"2003-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|0041211|2003-03-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041211","name":"Alpha Natural Resources, Inc."},"object":{"type":"operator","id":"0051178","name":"Herndon Processing Company LLC"},"validFrom":"2003-03-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"4603158","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4603158|0051178|2003-03-11|0041211|2003-03-11|1722"}}],"coverage":{"historyRecords":5,"edgeCount":15,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4603158","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"}}