{"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":"3800596","name":"BROWN # 2"},"operator":{"type":"operator","id":"L39883","name":"Carolina Vermiculite Div-Va Vermiculite LLC"},"controller":{"type":"controller","id":"0082513","name":"Ned  Gumble"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09011","name":"Robert  Sansom"},"object":{"type":"mine","id":"3800596","name":"BROWN # 2"},"validFrom":"1978-03-09","validTo":"2009-02-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|M09011|1978-03-09|2009-02-11"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07521","name":"Carolina Vermiculite Company Inc"},"object":{"type":"mine","id":"3800596","name":"BROWN # 2"},"validFrom":"1984-01-01","validTo":"1990-02-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|L07521|1984-01-01|1990-02-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05974","name":"William A  Strong"},"object":{"type":"mine","id":"3800596","name":"BROWN # 2"},"validFrom":"1984-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|M05974|1984-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05974","name":"William A  Strong"},"object":{"type":"operator","id":"L07521","name":"Carolina Vermiculite Company Inc"},"validFrom":"1984-01-01","validTo":"1990-02-12","current":false,"derived":true,"evidenceMineId":"3800596","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|L07521|1984-01-01|M05974|1984-01-01|135898"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L39883","name":"Carolina Vermiculite Div-Va Vermiculite LLC"},"object":{"type":"mine","id":"3800596","name":"BROWN # 2"},"validFrom":"1990-02-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|L39883|1990-02-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09011","name":"Robert  Sansom"},"object":{"type":"operator","id":"L39883","name":"Carolina Vermiculite Div-Va Vermiculite LLC"},"validFrom":"1990-02-13","validTo":"2009-02-11","current":false,"derived":true,"evidenceMineId":"3800596","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|L39883|1990-02-13|M09011|1978-03-09|144928"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0082513","name":"Ned  Gumble et al"},"object":{"type":"mine","id":"3800596","name":"BROWN # 2"},"validFrom":"2009-02-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|0082513|2009-02-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0082513","name":"Ned  Gumble et al"},"object":{"type":"operator","id":"L39883","name":"Carolina Vermiculite Div-Va Vermiculite LLC"},"validFrom":"2009-02-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"3800596","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800596|L39883|1990-02-13|0082513|2009-02-12|13138"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3800596","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"}}