{"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":"3304731","name":"Weber Materials, Ltd"},"operator":{"type":"operator","id":"0170033","name":"Weber Materials, Ltd"},"controller":{"type":"controller","id":"0154623","name":"Kevin  Weber; Marc  Bader"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0150933","name":"Cornerstone Crushing, LLC"},"object":{"type":"mine","id":"3304731","name":"Weber Materials, Ltd"},"validFrom":"2017-02-08","validTo":"2020-05-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0150933|2017-02-08|2020-05-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0133241","name":"Steve R  Oliver et al"},"object":{"type":"mine","id":"3304731","name":"Weber Materials, Ltd"},"validFrom":"2017-02-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0133241|2017-02-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0133241","name":"Steve R  Oliver et al"},"object":{"type":"operator","id":"0150933","name":"Cornerstone Crushing, LLC"},"validFrom":"2017-02-08","validTo":"2020-05-03","current":false,"derived":true,"evidenceMineId":"3304731","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0150933|2017-02-08|0133241|2017-02-08|26762"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0133241","name":"Benjamin  Geddis et al"},"object":{"type":"operator","id":"0150933","name":"Cornerstone Crushing, LLC"},"validFrom":"2017-02-08","validTo":"2020-05-03","current":false,"derived":true,"evidenceMineId":"3304731","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0150933|2017-02-08|0133241|2017-02-08|26763"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0170033","name":"Weber Materials, Ltd"},"object":{"type":"mine","id":"3304731","name":"Weber Materials, Ltd"},"validFrom":"2020-05-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0170033|2020-05-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0154623","name":"Kevin  Weber et al"},"object":{"type":"mine","id":"3304731","name":"Weber Materials, Ltd"},"validFrom":"2020-05-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0154623|2020-05-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0154623","name":"Kevin  Weber et al"},"object":{"type":"operator","id":"0170033","name":"Weber Materials, Ltd"},"validFrom":"2020-05-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304731","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0170033|2020-05-04|0154623|2020-05-04|32070"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0154623","name":"Marc  Bader et al"},"object":{"type":"operator","id":"0170033","name":"Weber Materials, Ltd"},"validFrom":"2020-05-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"3304731","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3304731|0170033|2020-05-04|0154623|2020-05-04|32071"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3304731","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"}}