{"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":"1302308","name":"400 CONE PLANT (Trenhaile Quarry)"},"operator":{"type":"operator","id":"L00089","name":"L R Falk Construction Company"},"controller":{"type":"controller","id":"M00039","name":"Lindsey R  Falk"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00039","name":"Lindsey R  Falk et al"},"object":{"type":"mine","id":"1302308","name":"400 CONE PLANT (Trenhaile Quarry)"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1302308|M00039|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00089","name":"L R Falk Construction Company"},"object":{"type":"mine","id":"1302308","name":"400 CONE PLANT (Trenhaile Quarry)"},"validFrom":"2005-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1302308|L00089|2005-11-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00039","name":"Lindsey R  Falk et al"},"object":{"type":"operator","id":"L00089","name":"L R Falk Construction Company"},"validFrom":"2005-11-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302308","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1302308|L00089|2005-11-03|M00039|1950-01-01|102426"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1302308","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"}}