{"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":"1601309","name":"JONES PIT"},"operator":{"type":"operator","id":"L16319","name":"Gulf Coast Gravel Inc"},"controller":{"type":"controller","id":"M12488","name":"Maxwell L  Johnson III"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11248","name":"Mississippi Materials"},"object":{"type":"mine","id":"1601309","name":"JONES PIT"},"validFrom":"1996-08-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601309|M11248|1996-08-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14779","name":"Louisiana Aggregates"},"object":{"type":"mine","id":"1601309","name":"JONES PIT"},"validFrom":"1996-09-01","validTo":"1998-10-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601309|L14779|1996-09-01|1998-10-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11248","name":"Mississippi Materials"},"object":{"type":"operator","id":"L14779","name":"Louisiana Aggregates"},"validFrom":"1996-09-01","validTo":"1998-10-25","current":false,"derived":true,"evidenceMineId":"1601309","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601309|L14779|1996-09-01|M11248|1996-08-16|151014"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16319","name":"Gulf Coast Gravel Inc"},"object":{"type":"mine","id":"1601309","name":"JONES PIT"},"validFrom":"1998-10-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601309|L16319|1998-10-26|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12488","name":"Maxwell L  Johnson III et al"},"object":{"type":"mine","id":"1601309","name":"JONES PIT"},"validFrom":"1998-10-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601309|M12488|1998-10-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12488","name":"Maxwell L  Johnson III et al"},"object":{"type":"operator","id":"L16319","name":"Gulf Coast Gravel Inc"},"validFrom":"1998-10-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"1601309","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1601309|L16319|1998-10-26|M12488|1998-10-26|153868"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1601309","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"}}