{"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":"0103591","name":"GUM POND QUARRY"},"operator":{"type":"operator","id":"0198873","name":"GRAYSON CARTER AND SON CONTRACTING, INC."},"controller":{"type":"controller","id":"0188300","name":"Halston G Carter"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0192913","name":"Reed Materials LLC"},"object":{"type":"mine","id":"0103591","name":"GUM POND QUARRY"},"validFrom":"2023-11-13","validTo":"2024-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0192913|2023-11-13|2024-09-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0181580","name":"Ashley Morgan Reed et al"},"object":{"type":"mine","id":"0103591","name":"GUM POND QUARRY"},"validFrom":"2023-11-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0181580|2023-11-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0181580","name":"Ashley Morgan Reed et al"},"object":{"type":"operator","id":"0192913","name":"Reed Materials LLC"},"validFrom":"2023-11-13","validTo":"2024-09-30","current":false,"derived":true,"evidenceMineId":"0103591","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0192913|2023-11-13|0181580|2023-11-13|38819"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0181580","name":"Chastin  Reed et al"},"object":{"type":"operator","id":"0192913","name":"Reed Materials LLC"},"validFrom":"2023-11-13","validTo":"2024-09-30","current":false,"derived":true,"evidenceMineId":"0103591","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0192913|2023-11-13|0181580|2023-11-13|38820"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0198873","name":"Grayson Carter and Son Contracting, Inc."},"object":{"type":"mine","id":"0103591","name":"GUM POND QUARRY"},"validFrom":"2024-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0198873|2024-10-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0188300","name":"Halston G Carter"},"object":{"type":"mine","id":"0103591","name":"GUM POND QUARRY"},"validFrom":"2024-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0188300|2024-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0188300","name":"Halston G Carter"},"object":{"type":"operator","id":"0198873","name":"Grayson Carter and Son Contracting, Inc."},"validFrom":"2024-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0103591","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0103591|0198873|2024-10-01|0188300|2024-10-01|40123"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0103591","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"}}