{"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":"2101320","name":"Luverne Wash Plant"},"operator":{"type":"operator","id":"0097845","name":"Northern Con-Agg, LLP"},"controller":{"type":"controller","id":"M08826","name":"Edward A Egan"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00046","name":"Hallett Construction Company"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"1950-01-01","validTo":"1987-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|L00046|1950-01-01|1987-02-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00086","name":"Hallett Construction Company"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash 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":"2101320|M00086|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00086","name":"Hallett Construction Company"},"object":{"type":"operator","id":"L00046","name":"Hallett Construction Company"},"validFrom":"1950-01-01","validTo":"1987-02-25","current":false,"derived":true,"evidenceMineId":"2101320","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|L00046|1950-01-01|M00086|1950-01-01|103926"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07342","name":"Ronald M Anderson"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"1986-12-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|M07342|1986-12-18|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09339","name":"Northern Con-Agg Inc"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"1987-02-26","validTo":"1989-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|L09339|1987-02-26|1989-08-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07342","name":"Ronald M Anderson"},"object":{"type":"operator","id":"L09339","name":"Northern Con-Agg Inc"},"validFrom":"1987-02-26","validTo":"1989-08-31","current":false,"derived":true,"evidenceMineId":"2101320","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|L09339|1987-02-26|M07342|1986-12-18|141090"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11418","name":"Northern Con-Agg Inc"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"1989-09-01","validTo":"2008-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|L11418|1989-09-01|2008-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08826","name":"Edward A Egan"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"1989-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|M08826|1989-09-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08826","name":"Edward A Egan"},"object":{"type":"operator","id":"L11418","name":"Northern Con-Agg Inc"},"validFrom":"1989-09-01","validTo":"2008-12-31","current":false,"derived":true,"evidenceMineId":"2101320","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|L11418|1989-09-01|M08826|1989-09-01|144159"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0097845","name":"Northern Con-Agg, LLP"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|0097845|2009-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08826","name":"Edward A Egan"},"object":{"type":"mine","id":"2101320","name":"Luverne Wash Plant"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|M08826|2009-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08826","name":"Edward A Egan"},"object":{"type":"operator","id":"0097845","name":"Northern Con-Agg, LLP"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2101320","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101320|0097845|2009-01-01|M08826|2009-01-01|144166"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2101320","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"}}