{"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":"2301988","name":"Plattin Valley Sand & Gravel"},"operator":{"type":"operator","id":"L14742","name":"Plattin Valley Sand & Gravel"},"controller":{"type":"controller","id":"M11217","name":"Walter E  Snyder"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11663","name":"Axtetter & Howard Inc"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"1988-05-01","validTo":"1990-04-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L11663|1988-05-01|1990-04-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09013","name":"Robert  Howard"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"1988-05-01","validTo":"1990-04-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|M09013|1988-05-01|1990-04-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09013","name":"Robert  Howard"},"object":{"type":"operator","id":"L11663","name":"Axtetter & Howard Inc"},"validFrom":"1988-05-01","validTo":"1990-04-08","current":false,"derived":true,"evidenceMineId":"2301988","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L11663|1988-05-01|M09013|1988-05-01|144931"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11664","name":"Axtetter & Battles Inc"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"1990-04-09","validTo":"1996-05-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L11664|1990-04-09|1996-05-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09014","name":"Fred Stuart  Battles"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"1990-04-09","validTo":"1996-05-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|M09014|1990-04-09|1996-05-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09014","name":"Fred Stuart  Battles"},"object":{"type":"operator","id":"L11664","name":"Axtetter & Battles Inc"},"validFrom":"1990-04-09","validTo":"1996-05-06","current":false,"derived":true,"evidenceMineId":"2301988","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L11664|1990-04-09|M09014|1990-04-09|144932"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14742","name":"Plattin Valley Sand & Gravel"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"1996-05-07","validTo":"2002-08-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L14742|1996-05-07|2002-08-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11217","name":"Walter E  Snyder"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"1996-05-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|M11217|1996-05-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11217","name":"Walter E  Snyder"},"object":{"type":"operator","id":"L14742","name":"Plattin Valley Sand & Gravel"},"validFrom":"1996-05-07","validTo":"2002-08-18","current":false,"derived":true,"evidenceMineId":"2301988","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L14742|1996-05-07|M11217|1996-05-07|150972"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050657","name":"Best Sand & Gravel Inc."},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"2002-08-19","validTo":"2004-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|0050657|2002-08-19|2004-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040995","name":"Glenn  Johner"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"2002-08-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|0040995|2002-08-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040995","name":"Glenn  Johner"},"object":{"type":"operator","id":"0050657","name":"Best Sand & Gravel Inc."},"validFrom":"2002-08-19","validTo":"2004-01-31","current":false,"derived":true,"evidenceMineId":"2301988","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|0050657|2002-08-19|0040995|2002-08-19|1162"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14742","name":"Plattin Valley Sand & Gravel"},"object":{"type":"mine","id":"2301988","name":"Plattin Valley Sand & Gravel"},"validFrom":"2004-02-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L14742|2004-02-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11217","name":"Walter E  Snyder"},"object":{"type":"operator","id":"L14742","name":"Plattin Valley Sand & Gravel"},"validFrom":"2004-02-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2301988","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2301988|L14742|2004-02-01|M11217|1996-05-07|150973"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2301988","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"}}