{"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":"2302318","name":"Quality Aggregates (Hillside Materials)"},"operator":{"type":"operator","id":"0096485","name":"Quality Aggregates LLC"},"controller":{"type":"controller","id":"0144201","name":"Harlan L Limpus"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0062423","name":"Team Excavating LLC"},"object":{"type":"mine","id":"2302318","name":"Quality Aggregates (Hillside Materials)"},"validFrom":"2005-07-08","validTo":"2008-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0062423|2005-07-08|2008-11-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0052111","name":"Kevin S  Thomas"},"object":{"type":"mine","id":"2302318","name":"Quality Aggregates (Hillside Materials)"},"validFrom":"2005-07-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0052111|2005-07-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0052111","name":"Kevin S  Thomas"},"object":{"type":"operator","id":"0062423","name":"Team Excavating LLC"},"validFrom":"2005-07-08","validTo":"2008-11-30","current":false,"derived":true,"evidenceMineId":"2302318","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0062423|2005-07-08|0052111|2005-07-08|6580"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0096485","name":"Quality Aggregates LLC"},"object":{"type":"mine","id":"2302318","name":"Quality Aggregates (Hillside Materials)"},"validFrom":"2008-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0096485|2008-12-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0081433","name":"Wayne E  Adolphsen et al"},"object":{"type":"mine","id":"2302318","name":"Quality Aggregates (Hillside Materials)"},"validFrom":"2008-12-01","validTo":"2018-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0081433|2008-12-01|2018-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0081433","name":"Wayne E  Adolphsen et al"},"object":{"type":"operator","id":"0096485","name":"Quality Aggregates LLC"},"validFrom":"2008-12-01","validTo":"2018-10-31","current":false,"derived":true,"evidenceMineId":"2302318","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0096485|2008-12-01|0081433|2008-12-01|12959"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0081433","name":"Harlan L  Limpus et al"},"object":{"type":"operator","id":"0096485","name":"Quality Aggregates LLC"},"validFrom":"2008-12-01","validTo":"2018-10-31","current":false,"derived":true,"evidenceMineId":"2302318","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0096485|2008-12-01|0081433|2008-12-01|12960"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144201","name":"Harlan L Limpus"},"object":{"type":"mine","id":"2302318","name":"Quality Aggregates (Hillside Materials)"},"validFrom":"2018-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0144201|2018-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144201","name":"Harlan L Limpus"},"object":{"type":"operator","id":"0096485","name":"Quality Aggregates LLC"},"validFrom":"2018-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2302318","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2302318|0096485|2008-12-01|0144201|2018-11-01|29214"}}],"coverage":{"historyRecords":4,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2302318","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"}}