{"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":"0504553","name":"Mystic Eagle Quarry"},"operator":{"type":"operator","id":"0149813","name":"Mystic Eagle Group, LLC"},"controller":{"type":"controller","id":"0131761","name":"Mystic Eagle Quarry LLC; Mystic Eagle Investors LLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10610","name":"Congdon Robert"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"1992-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|M10610|1992-05-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13883","name":"Crystal Valley Alabaster"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"1994-11-01","validTo":"1998-07-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|L13883|1994-11-01|1998-07-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10610","name":"Congdon Robert"},"object":{"type":"operator","id":"L13883","name":"Crystal Valley Alabaster"},"validFrom":"1994-11-01","validTo":"1998-07-21","current":false,"derived":true,"evidenceMineId":"0504553","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|L13883|1994-11-01|M10610|1992-05-01|149585"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16503","name":"Avalanche Creek Marble & Alabaster Llc"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"1998-07-22","validTo":"2003-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|L16503|1998-07-22|2003-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12627","name":"Congdon Robert & Tom Swint"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"1998-07-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|M12627|1998-07-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12627","name":"Congdon Robert & Tom Swint"},"object":{"type":"operator","id":"L16503","name":"Avalanche Creek Marble & Alabaster Llc"},"validFrom":"1998-07-22","validTo":"2003-05-31","current":false,"derived":true,"evidenceMineId":"0504553","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|L16503|1998-07-22|M12627|1998-07-22|154196"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051463","name":"White Banks Inc."},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"2003-06-01","validTo":"2017-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0051463|2003-06-01|2017-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0042027","name":"Robert L  Congdon Et Al"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"2003-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0042027|2003-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0042027","name":"Robert L  Congdon Et Al"},"object":{"type":"operator","id":"0051463","name":"White Banks Inc."},"validFrom":"2003-06-01","validTo":"2017-01-31","current":false,"derived":true,"evidenceMineId":"0504553","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0051463|2003-06-01|0042027|2003-06-01|3447"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0042027","name":"Julie C  Otis-Skinner Et Al"},"object":{"type":"operator","id":"0051463","name":"White Banks Inc."},"validFrom":"2003-06-01","validTo":"2017-01-31","current":false,"derived":true,"evidenceMineId":"0504553","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0051463|2003-06-01|0042027|2003-06-01|3448"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0149813","name":"Mystic Eagle Group, LLC"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"2017-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0149813|2017-02-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0131761","name":"Mystic Eagle Quarry LLC et al"},"object":{"type":"mine","id":"0504553","name":"Mystic Eagle Quarry"},"validFrom":"2017-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0131761|2017-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0131761","name":"Mystic Eagle Quarry LLC et al"},"object":{"type":"operator","id":"0149813","name":"Mystic Eagle Group, LLC"},"validFrom":"2017-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0504553","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0149813|2017-02-01|0131761|2017-02-01|26449"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0131761","name":"Mystic Eagle Investors LLC et al"},"object":{"type":"operator","id":"0149813","name":"Mystic Eagle Group, LLC"},"validFrom":"2017-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0504553","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0504553|0149813|2017-02-01|0131761|2017-02-01|26450"}}],"coverage":{"historyRecords":6,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0504553","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"}}