{"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":"2026-10-18T09:31:49.615908+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":"2302302","name":"Bell Sand and Gravel"},"operator":{"type":"operator","id":"0056921","name":"Bell Sand and Gravel"},"controller":{"type":"controller","id":"0047357","name":"Brent  Bell; Brian  Bell"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0056921","name":"Bell Sand and Gravel"},"object":{"type":"mine","id":"2302302","name":"Bell Sand and Gravel"},"validFrom":"2005-01-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302302|0056921|2005-01-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0047357","name":"Brent  Bell et al"},"object":{"type":"mine","id":"2302302","name":"Bell Sand and Gravel"},"validFrom":"2005-01-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302302|0047357|2005-01-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0047357","name":"Brent  Bell et al"},"object":{"type":"operator","id":"0056921","name":"Bell Sand and Gravel"},"validFrom":"2005-01-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"2302302","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302302|0056921|2005-01-19|0047357|2005-01-19|5795"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0047357","name":"Brian  Bell et al"},"object":{"type":"operator","id":"0056921","name":"Bell Sand and Gravel"},"validFrom":"2005-01-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"2302302","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2302302|0056921|2005-01-19|0047357|2005-01-19|5796"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2302302","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}