{"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":"4300729","name":"VERMONT AGGREGATES, LLC"},"operator":{"type":"operator","id":"L13721","name":"S. D. Ireland Brothers Corporation"},"controller":{"type":"controller","id":"M10465","name":"Scott D  Ireland"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10465","name":"Scott D  Ireland"},"object":{"type":"mine","id":"4300729","name":"VERMONT AGGREGATES, LLC"},"validFrom":"1986-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300729|M10465|1986-05-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0119088","name":"Gray Rock Quarry"},"object":{"type":"mine","id":"4300729","name":"VERMONT AGGREGATES, LLC"},"validFrom":"2011-04-22","validTo":"2024-11-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300729|0119088|2011-04-22|2024-11-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01292","name":"William E  Dailey III"},"object":{"type":"mine","id":"4300729","name":"VERMONT AGGREGATES, LLC"},"validFrom":"2011-04-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300729|M01292|2011-04-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01292","name":"William E  Dailey III"},"object":{"type":"operator","id":"0119088","name":"Gray Rock Quarry"},"validFrom":"2011-04-22","validTo":"2024-11-05","current":false,"derived":true,"evidenceMineId":"4300729","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300729|0119088|2011-04-22|M01292|2011-04-22|117801"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13721","name":"S. D. Ireland Brothers Corporation"},"object":{"type":"mine","id":"4300729","name":"VERMONT AGGREGATES, LLC"},"validFrom":"2024-11-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300729|L13721|2024-11-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10465","name":"Scott D  Ireland"},"object":{"type":"operator","id":"L13721","name":"S. D. Ireland Brothers Corporation"},"validFrom":"2024-11-06","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300729","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300729|L13721|2024-11-06|M10465|1986-05-01|149300"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4300729","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"}}