{"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":"1302015","name":"Widger Quarry"},"operator":{"type":"operator","id":"L06046","name":"Basic Materials Corp"},"controller":{"type":"controller","id":"M04838","name":"Manatts Enterprises; Cedar Valley Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04838","name":"Manatts Enterprises et al"},"object":{"type":"mine","id":"1302015","name":"Widger Quarry"},"validFrom":"1982-11-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302015|M04838|1982-11-29|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06046","name":"Basic Materials Corp"},"object":{"type":"mine","id":"1302015","name":"Widger Quarry"},"validFrom":"1984-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302015|L06046|1984-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04838","name":"Manatts Enterprises et al"},"object":{"type":"operator","id":"L06046","name":"Basic Materials Corp"},"validFrom":"1984-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302015|L06046|1984-02-01|M04838|1982-11-29|132953"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04838","name":"Cedar Valley Corp  et al"},"object":{"type":"operator","id":"L06046","name":"Basic Materials Corp"},"validFrom":"1984-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302015|L06046|1984-02-01|M04838|1982-11-29|132954"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1302015","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"}}