{"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":"3607557","name":"Henry Clay Bank"},"operator":{"type":"operator","id":"0105606","name":"Ken Snyder Inc"},"controller":{"type":"controller","id":"0089375","name":"Ken  Snyder"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01068","name":"Elwood  Swank"},"object":{"type":"mine","id":"3607557","name":"Henry Clay Bank"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607557|C01068|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01249","name":"Split Vein Coal Company Inc"},"object":{"type":"mine","id":"3607557","name":"Henry Clay Bank"},"validFrom":"1984-03-01","validTo":"2011-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607557|P01249|1984-03-01|2011-07-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01068","name":"Elwood  Swank"},"object":{"type":"operator","id":"P01249","name":"Split Vein Coal Company Inc"},"validFrom":"1984-03-01","validTo":"2011-07-31","current":false,"derived":true,"evidenceMineId":"3607557","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607557|P01249|1984-03-01|C01068|1950-01-01|52071"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0089375","name":"Ken  Snyder"},"object":{"type":"mine","id":"3607557","name":"Henry Clay Bank"},"validFrom":"2009-08-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607557|0089375|2009-08-18|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0105606","name":"Ken Snyder Inc"},"object":{"type":"mine","id":"3607557","name":"Henry Clay Bank"},"validFrom":"2011-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607557|0105606|2011-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0089375","name":"Ken  Snyder"},"object":{"type":"operator","id":"0105606","name":"Ken Snyder Inc"},"validFrom":"2011-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607557","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607557|0105606|2011-08-01|0089375|2009-08-18|14369"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3607557","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"}}