{"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":"4500822","name":"Wenatchee Silica Products Inc"},"operator":{"type":"operator","id":"L05339","name":"Asamera Minerals (Us) Inc"},"controller":{"type":"controller","id":"M04308","name":"Asamera Resources Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04308","name":"Asamera Resources Inc"},"object":{"type":"mine","id":"4500822","name":"Wenatchee Silica Products Inc"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4500822|M04308|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07666","name":"Wenatchee Silica Products Inc"},"object":{"type":"mine","id":"4500822","name":"Wenatchee Silica Products Inc"},"validFrom":"1950-01-01","validTo":"1984-09-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4500822|L07666|1950-01-01|1984-09-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06091","name":"Truswell Byron W"},"object":{"type":"mine","id":"4500822","name":"Wenatchee Silica Products Inc"},"validFrom":"1950-01-01","validTo":"1984-09-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4500822|M06091|1950-01-01|1984-09-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06091","name":"Truswell Byron W"},"object":{"type":"operator","id":"L07666","name":"Wenatchee Silica Products Inc"},"validFrom":"1950-01-01","validTo":"1984-09-14","current":false,"derived":true,"evidenceMineId":"4500822","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4500822|L07666|1950-01-01|M06091|1950-01-01|136216"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05339","name":"Asamera Minerals (Us) Inc"},"object":{"type":"mine","id":"4500822","name":"Wenatchee Silica Products Inc"},"validFrom":"1984-09-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4500822|L05339|1984-09-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04308","name":"Asamera Resources Inc"},"object":{"type":"operator","id":"L05339","name":"Asamera Minerals (Us) Inc"},"validFrom":"1984-09-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"4500822","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4500822|L05339|1984-09-15|M04308|1950-01-01|131688"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4500822","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"}}