{"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":"4003085","name":"Jackson Sand"},"operator":{"type":"operator","id":"L14895","name":"Jackson Sand"},"controller":{"type":"controller","id":"M11332","name":"Albert  Pope; Jeff  Pope"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14099","name":"Jackson Sand Company L P"},"object":{"type":"mine","id":"4003085","name":"Jackson Sand"},"validFrom":"1995-05-01","validTo":"1996-06-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|L14099|1995-05-01|1996-06-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10774","name":"Freddie  Hill et al"},"object":{"type":"mine","id":"4003085","name":"Jackson Sand"},"validFrom":"1995-05-01","validTo":"1996-06-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|M10774|1995-05-01|1996-06-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10774","name":"Freddie  Hill et al"},"object":{"type":"operator","id":"L14099","name":"Jackson Sand Company L P"},"validFrom":"1995-05-01","validTo":"1996-06-03","current":false,"derived":true,"evidenceMineId":"4003085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|L14099|1995-05-01|M10774|1995-05-01|149972"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14895","name":"Jackson Sand"},"object":{"type":"mine","id":"4003085","name":"Jackson Sand"},"validFrom":"1996-06-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|L14895|1996-06-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11332","name":"Albert  Pope et al"},"object":{"type":"mine","id":"4003085","name":"Jackson Sand"},"validFrom":"1996-06-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|M11332|1996-06-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11332","name":"Albert  Pope et al"},"object":{"type":"operator","id":"L14895","name":"Jackson Sand"},"validFrom":"1996-06-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4003085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|L14895|1996-06-04|M11332|1996-06-04|151204"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11332","name":"Jeff  Pope et al"},"object":{"type":"operator","id":"L14895","name":"Jackson Sand"},"validFrom":"1996-06-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4003085","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4003085|L14895|1996-06-04|M11332|1996-06-04|151205"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4003085","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"}}