{"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":"4703470","name":"Lake Tom Screen Plant"},"operator":{"type":"operator","id":"0187353","name":"County Ready Mix Corp"},"controller":{"type":"controller","id":"0174861","name":"William  Sonnentag"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06827","name":"Tim  Sonnentag et al"},"object":{"type":"mine","id":"4703470","name":"Lake Tom Screen Plant"},"validFrom":"2005-05-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703470|M06827|2005-05-25|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0059924","name":"County Materials Corp"},"object":{"type":"mine","id":"4703470","name":"Lake Tom Screen Plant"},"validFrom":"2006-06-28","validTo":"2026-08-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703470|0059924|2006-06-28|2026-08-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06827","name":"Tim  Sonnentag et al"},"object":{"type":"operator","id":"0059924","name":"County Materials Corp"},"validFrom":"2006-06-28","validTo":"2026-08-19","current":false,"derived":true,"evidenceMineId":"4703470","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703470|0059924|2006-06-28|M06827|2005-05-25|139468"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0174861","name":"William  Sonnentag"},"object":{"type":"mine","id":"4703470","name":"Lake Tom Screen Plant"},"validFrom":"2023-03-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703470|0174861|2023-03-09|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0187353","name":"County Ready Mix Corp"},"object":{"type":"mine","id":"4703470","name":"Lake Tom Screen Plant"},"validFrom":"2026-08-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703470|0187353|2026-08-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0174861","name":"William  Sonnentag"},"object":{"type":"operator","id":"0187353","name":"County Ready Mix Corp"},"validFrom":"2026-08-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"4703470","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4703470|0187353|2026-08-20|0174861|2023-03-09|37267"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4703470","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"}}