{"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":"4407332","name":"Holland Materials, LLC"},"operator":{"type":"operator","id":"0211033","name":"Holland Materials, LLC"},"controller":{"type":"controller","id":"0180001","name":"Robert W (Bobby)  Wynn"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0137714","name":"Holland Sand Pit, LLC"},"object":{"type":"mine","id":"4407332","name":"Holland Materials, LLC"},"validFrom":"2015-02-25","validTo":"2026-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4407332|0137714|2015-02-25|2026-07-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0117143","name":"Jeffrey A Paxton"},"object":{"type":"mine","id":"4407332","name":"Holland Materials, LLC"},"validFrom":"2015-02-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4407332|0117143|2015-02-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0117143","name":"Jeffrey A Paxton"},"object":{"type":"operator","id":"0137714","name":"Holland Sand Pit, LLC"},"validFrom":"2015-02-25","validTo":"2026-07-31","current":false,"derived":true,"evidenceMineId":"4407332","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4407332|0137714|2015-02-25|0117143|2015-02-25|22259"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0211033","name":"Holland Materials, LLC"},"object":{"type":"mine","id":"4407332","name":"Holland Materials, LLC"},"validFrom":"2026-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4407332|0211033|2026-08-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0180001","name":"Robert W (Bobby)  Wynn"},"object":{"type":"mine","id":"4407332","name":"Holland Materials, LLC"},"validFrom":"2026-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4407332|0180001|2026-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0180001","name":"Robert W (Bobby)  Wynn"},"object":{"type":"operator","id":"0211033","name":"Holland Materials, LLC"},"validFrom":"2026-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407332","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4407332|0211033|2026-08-01|0180001|2026-08-01|38529"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4407332","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"}}