{"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":"3402114","name":"Blue River Quarry"},"operator":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"controller":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"1950-01-01","validTo":"2007-11-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|M00024|1950-01-01|2007-11-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"2007-11-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0071891|2007-11-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0115245","name":"Connolly Bros LLC"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"2010-11-01","validTo":"2011-07-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0115245|2010-11-01|2011-07-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0097673","name":"Pam S  Connolly et al"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"2010-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0097673|2010-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0097673","name":"Pam S  Connolly et al"},"object":{"type":"operator","id":"0115245","name":"Connolly Bros LLC"},"validFrom":"2010-11-01","validTo":"2011-07-10","current":false,"derived":true,"evidenceMineId":"3402114","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0115245|2010-11-01|0097673|2010-11-01|16004"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0097673","name":"Roy T  Connolly et al"},"object":{"type":"operator","id":"0115245","name":"Connolly Bros LLC"},"validFrom":"2010-11-01","validTo":"2011-07-10","current":false,"derived":true,"evidenceMineId":"3402114","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0115245|2010-11-01|0097673|2010-11-01|16005"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0118909","name":"Blessing Gravel LLC"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"2011-07-11","validTo":"2026-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0118909|2011-07-11|2026-02-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0100927","name":"Joyce L  Stowers"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"2011-07-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0100927|2011-07-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0100927","name":"Joyce L  Stowers"},"object":{"type":"operator","id":"0118909","name":"Blessing Gravel LLC"},"validFrom":"2011-07-11","validTo":"2026-02-25","current":false,"derived":true,"evidenceMineId":"3402114","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|0118909|2011-07-11|0100927|2011-07-11|16898"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"object":{"type":"mine","id":"3402114","name":"Blue River Quarry"},"validFrom":"2026-02-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|L16168|2026-02-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"validFrom":"2026-02-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"3402114","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|L16168|2026-02-26|0071891|2007-11-16|10895"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"validFrom":"2026-02-26","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"3402114","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3402114|L16168|2026-02-26|M00024|1950-01-01|101811"}}],"coverage":{"historyRecords":5,"edgeCount":12,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3402114","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"}}