{"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":"2002777","name":"Forrest Aggregate"},"operator":{"type":"operator","id":"0051379","name":"Forrest Aggregate"},"controller":{"type":"controller","id":"0041891","name":"William G  Forrest"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12482","name":"U S Aggregate Corp"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"1987-06-01","validTo":"1991-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|L12482|1987-06-01|1991-06-27"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09574","name":"Gordon A  Snowden"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"1987-06-01","validTo":"1991-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|M09574|1987-06-01|1991-06-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09574","name":"Gordon A  Snowden"},"object":{"type":"operator","id":"L12482","name":"U S Aggregate Corp"},"validFrom":"1987-06-01","validTo":"1991-06-27","current":false,"derived":true,"evidenceMineId":"2002777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|L12482|1987-06-01|M09574|1987-06-01|146749"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12483","name":"U S Aggregate Corp"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"1991-06-28","validTo":"1995-09-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|L12483|1991-06-28|1995-09-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09575","name":"Billie  Andison et al"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"1991-06-28","validTo":"1995-09-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|M09575|1991-06-28|1995-09-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09575","name":"Billie  Andison et al"},"object":{"type":"operator","id":"L12483","name":"U S Aggregate Corp"},"validFrom":"1991-06-28","validTo":"1995-09-06","current":false,"derived":true,"evidenceMineId":"2002777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|L12483|1991-06-28|M09575|1991-06-28|146750"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14745","name":"B & A Aggregates"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"1995-09-07","validTo":"2003-06-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|L14745|1995-09-07|2003-06-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11220","name":"Elaine  Andison"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"1995-09-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|M11220|1995-09-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11220","name":"Elaine  Andison"},"object":{"type":"operator","id":"L14745","name":"B & A Aggregates"},"validFrom":"1995-09-07","validTo":"2003-06-09","current":false,"derived":true,"evidenceMineId":"2002777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|L14745|1995-09-07|M11220|1995-09-07|150961"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051379","name":"Forrest Aggregate"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"2003-06-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|0051379|2003-06-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041891","name":"William G  Forrest"},"object":{"type":"mine","id":"2002777","name":"Forrest Aggregate"},"validFrom":"2003-06-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|0041891|2003-06-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041891","name":"William G  Forrest"},"object":{"type":"operator","id":"0051379","name":"Forrest Aggregate"},"validFrom":"2003-06-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"2002777","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2002777|0051379|2003-06-10|0041891|2003-06-10|3246"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2002777","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"}}