{"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":"3304540","name":"Melvin Stone-Mashall"},"operator":{"type":"operator","id":"L17040","name":"Melvin Stone LLC"},"controller":{"type":"controller","id":"0142503","name":"James P  Jurgensen II; Jacqueline J  Alf; Jason R  Jurgensen"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08714","name":"James P  Jurgensen"},"object":{"type":"mine","id":"3304540","name":"Melvin Stone-Mashall"},"validFrom":"1999-08-06","validTo":"2018-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|M08714|1999-08-06|2018-04-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0058057","name":"Marshall Quarry, Inc."},"object":{"type":"mine","id":"3304540","name":"Melvin Stone-Mashall"},"validFrom":"2005-02-25","validTo":"2026-07-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|0058057|2005-02-25|2026-07-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0048329","name":"Ronald L  Main"},"object":{"type":"mine","id":"3304540","name":"Melvin Stone-Mashall"},"validFrom":"2005-02-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|0048329|2005-02-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0048329","name":"Ronald L  Main"},"object":{"type":"operator","id":"0058057","name":"Marshall Quarry, Inc."},"validFrom":"2005-02-25","validTo":"2026-07-15","current":false,"derived":true,"evidenceMineId":"3304540","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|0058057|2005-02-25|0048329|2005-02-25|6040"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0142503","name":"Jacqueline J  Alf et al"},"object":{"type":"mine","id":"3304540","name":"Melvin Stone-Mashall"},"validFrom":"2018-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|0142503|2018-05-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17040","name":"Melvin Stone LLC"},"object":{"type":"mine","id":"3304540","name":"Melvin Stone-Mashall"},"validFrom":"2026-07-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|L17040|2026-07-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0142503","name":"Jacqueline J  Alf et al"},"object":{"type":"operator","id":"L17040","name":"Melvin Stone LLC"},"validFrom":"2026-07-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304540","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|L17040|2026-07-16|0142503|2018-05-01|28830"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0142503","name":"Jason R  Jurgensen et al"},"object":{"type":"operator","id":"L17040","name":"Melvin Stone LLC"},"validFrom":"2026-07-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304540","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|L17040|2026-07-16|0142503|2018-05-01|28831"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0142503","name":"James P  Jurgensen II et al"},"object":{"type":"operator","id":"L17040","name":"Melvin Stone LLC"},"validFrom":"2026-07-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304540","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|L17040|2026-07-16|0142503|2018-05-01|28832"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08714","name":"James P  Jurgensen"},"object":{"type":"operator","id":"L17040","name":"Melvin Stone LLC"},"validFrom":"2026-07-16","validTo":"2018-04-30","current":false,"derived":true,"evidenceMineId":"3304540","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3304540|L17040|2026-07-16|M08714|1999-08-06|143946"}}],"coverage":{"historyRecords":5,"edgeCount":10,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3304540","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"}}