{"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":"2800011","name":"Hamburg 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":"2800011","name":"Hamburg 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":"2800011|M00024|1950-01-01|2007-11-15"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02624","name":"Hamburg Quarry Inc"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"1950-01-01","validTo":"1978-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L02624|1950-01-01|1978-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02216","name":"John A  Braen"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"1950-01-01","validTo":"1978-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|M02216|1950-01-01|1978-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02216","name":"John A  Braen"},"object":{"type":"operator","id":"L02624","name":"Hamburg Quarry Inc"},"validFrom":"1950-01-01","validTo":"1978-12-31","current":false,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L02624|1950-01-01|M02216|1950-01-01|124339"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02626","name":"Blue Circle-Raia"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"1979-01-01","validTo":"1987-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L02626|1979-01-01|1987-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02218","name":"Joseph  Raia Sr"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"1979-01-01","validTo":"1987-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|M02218|1979-01-01|1987-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02218","name":"Joseph  Raia Sr"},"object":{"type":"operator","id":"L02626","name":"Blue Circle-Raia"},"validFrom":"1979-01-01","validTo":"1987-06-30","current":false,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L02626|1979-01-01|M02218|1979-01-01|124344"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12341","name":"Blue Circle Materials Inc"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"1987-07-01","validTo":"2002-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L12341|1987-07-01|2002-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05332","name":"Blue Circle Industries Plc"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"1987-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|M05332|1987-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05332","name":"Blue Circle Industries Plc"},"object":{"type":"operator","id":"L12341","name":"Blue Circle Materials Inc"},"validFrom":"1987-07-01","validTo":"2002-01-31","current":false,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L12341|1987-07-01|M05332|1987-07-01|134311"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050445","name":"Eastern Concrete Materials, Inc."},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"2002-02-01","validTo":"2022-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|0050445|2002-02-01|2022-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040826","name":"US Concrete"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"2002-02-01","validTo":"2021-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|0040826|2002-02-01|2021-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040826","name":"US Concrete"},"object":{"type":"operator","id":"0050445","name":"Eastern Concrete Materials, Inc."},"validFrom":"2002-02-01","validTo":"2021-12-31","current":false,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|0050445|2002-02-01|0040826|2002-02-01|740"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"2800011","name":"Hamburg 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":"2800011|0071891|2007-11-16|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"2022-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|0071891|2022-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"0050445","name":"Eastern Concrete Materials, Inc."},"validFrom":"2022-01-01","validTo":"2022-12-31","current":false,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|0050445|2002-02-01|0071891|2022-01-01|11102"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"object":{"type":"mine","id":"2800011","name":"Hamburg Quarry"},"validFrom":"2023-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L16168|2023-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"validFrom":"2023-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L16168|2023-01-01|0071891|2007-11-16|10843"}},{"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":"2023-01-01","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"2800011","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2800011|L16168|2023-01-01|M00024|1950-01-01|101773"}}],"coverage":{"historyRecords":7,"edgeCount":19,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2800011","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"}}