{"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":"0405626","name":"Fort Cady Quarry"},"operator":{"type":"operator","id":"L16645","name":"CalMat Co"},"controller":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00360","name":"Peter Kiewit Sons' Inc"},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"1984-07-01","validTo":"2023-09-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|M00360|1984-07-01|2023-09-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"1999-01-06","validTo":"2007-11-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|M00024|1999-01-06|2007-11-15"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07354","name":"Kiewit Pacific Co."},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"2004-12-22","validTo":"2012-08-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|L07354|2004-12-22|2012-08-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00360","name":"Peter Kiewit Sons' Inc"},"object":{"type":"operator","id":"L07354","name":"Kiewit Pacific Co."},"validFrom":"2004-12-22","validTo":"2012-08-09","current":false,"derived":true,"evidenceMineId":"0405626","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|L07354|2004-12-22|M00360|1984-07-01|110206"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"2007-11-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|0071891|2007-11-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0124410","name":"Security Paving Company, Inc."},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"2012-08-10","validTo":"2015-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|0124410|2012-08-10|2015-02-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0092993","name":"Albert  Mattivi"},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"2012-08-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|0092993|2012-08-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0092993","name":"Albert  Mattivi"},"object":{"type":"operator","id":"0124410","name":"Security Paving Company, Inc."},"validFrom":"2012-08-10","validTo":"2015-02-25","current":false,"derived":true,"evidenceMineId":"0405626","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|0124410|2012-08-10|0092993|2012-08-10|15272"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16645","name":"CalMat Co"},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"2015-02-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|L16645|2015-02-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L16645","name":"CalMat Co"},"validFrom":"2015-02-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"0405626","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|L16645|2015-02-26|0071891|2007-11-16|10615"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"operator","id":"L16645","name":"CalMat Co"},"validFrom":"2015-02-26","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"0405626","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|L16645|2015-02-26|M00024|1999-01-06|102080"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0179961","name":"Kiewit Infrastructure Group Inc"},"object":{"type":"mine","id":"0405626","name":"Fort Cady Quarry"},"validFrom":"2023-09-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|0179961|2023-09-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0179961","name":"Kiewit Infrastructure Group Inc"},"object":{"type":"operator","id":"L07354","name":"Kiewit Pacific Co."},"validFrom":"2023-09-19","validTo":"2012-08-09","current":false,"derived":true,"evidenceMineId":"0405626","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0405626|L07354|2004-12-22|0179961|2023-09-19|38507"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0405626","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"}}