{"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":"2402372","name":"Sickler  Shale & Gravel Portable Crusher"},"operator":{"type":"operator","id":"0061463","name":"Sickler Shale & Gravel, Inc."},"controller":{"type":"controller","id":"0051295","name":"Norman K Hanson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0061463","name":"Sickler Shale & Gravel, Inc."},"object":{"type":"mine","id":"2402372","name":"Sickler  Shale & Gravel Portable Crusher"},"validFrom":"2005-06-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2402372|0061463|2005-06-08|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0051295","name":"Norman K Hanson"},"object":{"type":"mine","id":"2402372","name":"Sickler  Shale & Gravel Portable Crusher"},"validFrom":"2005-06-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2402372|0051295|2005-06-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0051295","name":"Norman K Hanson"},"object":{"type":"operator","id":"0061463","name":"Sickler Shale & Gravel, Inc."},"validFrom":"2005-06-08","validTo":null,"current":true,"derived":true,"evidenceMineId":"2402372","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"2402372|0061463|2005-06-08|0051295|2005-06-08|6447"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2402372","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"}}