{"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":"2026-10-17T05:35:58.500035+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":"1302204","name":"Portable Sand Plant #105"},"operator":{"type":"operator","id":"0076763","name":"BMC Aggregates LC"},"controller":{"type":"controller","id":"M04838","name":"Manatts Enterprises; Cedar Valley Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14374","name":"North Iowa Sand & Gravel Inc"},"object":{"type":"mine","id":"1302204","name":"Portable Sand Plant #105"},"validFrom":"1996-02-01","validTo":"2024-09-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|L14374|1996-02-01|2024-09-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10980","name":"Robert C Tuttle"},"object":{"type":"mine","id":"1302204","name":"Portable Sand Plant #105"},"validFrom":"1996-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|M10980|1996-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10980","name":"Robert C Tuttle"},"object":{"type":"operator","id":"L14374","name":"North Iowa Sand & Gravel Inc"},"validFrom":"1996-02-01","validTo":"2024-09-04","current":false,"derived":true,"evidenceMineId":"1302204","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|L14374|1996-02-01|M10980|1996-02-01|150407"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04838","name":"Manatts Enterprises et al"},"object":{"type":"mine","id":"1302204","name":"Portable Sand Plant #105"},"validFrom":"2006-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|M04838|2006-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0076763","name":"BMC Aggregates LC"},"object":{"type":"mine","id":"1302204","name":"Portable Sand Plant #105"},"validFrom":"2024-09-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|0076763|2024-09-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04838","name":"Manatts Enterprises et al"},"object":{"type":"operator","id":"0076763","name":"BMC Aggregates LC"},"validFrom":"2024-09-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302204","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|0076763|2024-09-05|M04838|2006-08-01|133038"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04838","name":"Cedar Valley Corp  et al"},"object":{"type":"operator","id":"0076763","name":"BMC Aggregates LC"},"validFrom":"2024-09-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302204","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1302204|0076763|2024-09-05|M04838|2006-08-01|133039"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1302204","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}