{"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":"1202021","name":"Warsaw Plant"},"operator":{"type":"operator","id":"L07219","name":"Elkhart County Gravel, Inc."},"controller":{"type":"controller","id":"M05747","name":"Barney C  Beer"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05747","name":"Barney C  Beer  et al"},"object":{"type":"mine","id":"1202021","name":"Warsaw Plant"},"validFrom":"1981-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202021|M05747|1981-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07219","name":"Elkhart County Gravel, Inc."},"object":{"type":"mine","id":"1202021","name":"Warsaw Plant"},"validFrom":"1988-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202021|L07219|1988-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05747","name":"Barney C  Beer  et al"},"object":{"type":"operator","id":"L07219","name":"Elkhart County Gravel, Inc."},"validFrom":"1988-03-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1202021","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202021|L07219|1988-03-01|M05747|1981-09-01|135339"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1202021","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"}}