{"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":"1518752","name":"Lake City 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":"1518752","name":"Lake City 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":"1518752|M00024|1950-01-01|2007-11-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00290","name":"Florida Rock Industries Inc"},"object":{"type":"mine","id":"1518752","name":"Lake City 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":"1518752|M00290|1950-01-01|2007-11-15"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0053054","name":"John Henry Quarries, LLC"},"object":{"type":"mine","id":"1518752","name":"Lake City Quarry"},"validFrom":"2004-05-01","validTo":"2005-12-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|0053054|2004-05-01|2005-12-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0043885","name":"Fred W  Banks et al"},"object":{"type":"mine","id":"1518752","name":"Lake City Quarry"},"validFrom":"2004-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|0043885|2004-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043885","name":"Fred W  Banks et al"},"object":{"type":"operator","id":"0053054","name":"John Henry Quarries, LLC"},"validFrom":"2004-05-01","validTo":"2005-12-29","current":false,"derived":true,"evidenceMineId":"1518752","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|0053054|2004-05-01|0043885|2004-05-01|4854"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0043885","name":"Damian T  Cristiani et al"},"object":{"type":"operator","id":"0053054","name":"John Henry Quarries, LLC"},"validFrom":"2004-05-01","validTo":"2005-12-29","current":false,"derived":true,"evidenceMineId":"1518752","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|0053054|2004-05-01|0043885|2004-05-01|4855"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00354","name":"Florida Rock Industries Inc"},"object":{"type":"mine","id":"1518752","name":"Lake City Quarry"},"validFrom":"2005-12-30","validTo":"2007-11-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|L00354|2005-12-30|2007-11-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00290","name":"Florida Rock Industries Inc"},"object":{"type":"operator","id":"L00354","name":"Florida Rock Industries Inc"},"validFrom":"2005-12-30","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"1518752","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|L00354|2005-12-30|M00290|1950-01-01|109032"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"1518752","name":"Lake City 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":"1518752|0071891|2007-11-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L00354","name":"Florida Rock Industries Inc"},"validFrom":"2007-11-16","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"1518752","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|L00354|2005-12-30|0071891|2007-11-16|10827"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"object":{"type":"mine","id":"1518752","name":"Lake City 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":"1518752|L16168|2007-11-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"validFrom":"2007-11-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"1518752","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|L16168|2007-11-16|0071891|2007-11-16|10828"}},{"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":"2007-11-16","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"1518752","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1518752|L16168|2007-11-16|M00024|1950-01-01|101764"}}],"coverage":{"historyRecords":6,"edgeCount":13,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1518752","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"}}