{"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":"1519729","name":"No 42A"},"operator":{"type":"operator","id":"0096126","name":"Augustus Augering & Contracting Inc."},"controller":{"type":"controller","id":"0119741","name":"Karen A  Stephens; Melodye G  Stephens; David A  Lester"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0068753","name":"William A  Stephens et al"},"object":{"type":"mine","id":"1519729","name":"No 42A"},"validFrom":"2008-12-02","validTo":"2015-04-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0068753|2008-12-02|2015-04-24"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0096126","name":"Augustus Augering & Contracting Inc."},"object":{"type":"mine","id":"1519729","name":"No 42A"},"validFrom":"2013-12-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0096126|2013-12-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0068753","name":"William A  Stephens et al"},"object":{"type":"operator","id":"0096126","name":"Augustus Augering & Contracting Inc."},"validFrom":"2013-12-12","validTo":"2015-04-24","current":false,"derived":true,"evidenceMineId":"1519729","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0096126|2013-12-12|0068753|2008-12-02|9718"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119741","name":"David A  Lester et al"},"object":{"type":"mine","id":"1519729","name":"No 42A"},"validFrom":"2015-04-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0119741|2015-04-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119741","name":"David A  Lester et al"},"object":{"type":"operator","id":"0096126","name":"Augustus Augering & Contracting Inc."},"validFrom":"2015-04-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519729","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0096126|2013-12-12|0119741|2015-04-25|23307"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119741","name":"Karen A  Stephens et al"},"object":{"type":"operator","id":"0096126","name":"Augustus Augering & Contracting Inc."},"validFrom":"2015-04-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519729","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0096126|2013-12-12|0119741|2015-04-25|23308"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119741","name":"Melodye G  Stephens et al"},"object":{"type":"operator","id":"0096126","name":"Augustus Augering & Contracting Inc."},"validFrom":"2015-04-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519729","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1519729|0096126|2013-12-12|0119741|2015-04-25|23309"}}],"coverage":{"historyRecords":4,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1519729","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"}}