{"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":"4001814","name":"Pleasant View 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":"M00017","name":"Asarco Inc"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|M00017|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00024","name":"Legacy Vulcan Corp (Form:Vulcan Materials Co)"},"object":{"type":"mine","id":"4001814","name":"Pleasant View 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":"4001814|M00024|1950-01-01|2007-11-15"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01296","name":"Porter Brown Limestone Company Inc"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"1950-01-01","validTo":"1988-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L01296|1950-01-01|1988-11-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01142","name":"Benton  Brown Sr"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|M01142|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01142","name":"Benton  Brown Sr"},"object":{"type":"operator","id":"L01296","name":"Porter Brown Limestone Company Inc"},"validFrom":"1950-01-01","validTo":"1988-11-30","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L01296|1950-01-01|M01142|1950-01-01|117006"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00008","name":"American Limestone Company Inc"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"1988-12-01","validTo":"1999-11-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L00008|1988-12-01|1999-11-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00017","name":"Asarco Inc"},"object":{"type":"operator","id":"L00008","name":"American Limestone Company Inc"},"validFrom":"1988-12-01","validTo":"1999-11-16","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L00008|1988-12-01|M00017|1950-01-01|101481"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17288","name":"American Limestone Company Inc"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"1999-11-17","validTo":"2000-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L17288|1999-11-17|2000-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13109","name":"Grupo Mexico S A B de C V"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"1999-11-17","validTo":"2000-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|M13109|1999-11-17|2000-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13109","name":"Grupo Mexico S A B de C V"},"object":{"type":"operator","id":"L17288","name":"American Limestone Company Inc"},"validFrom":"1999-11-17","validTo":"2000-06-30","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L17288|1999-11-17|M13109|1999-11-17|155506"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17419","name":"Rinker Materials South Central, Inc."},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2000-07-01","validTo":"2008-02-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L17419|2000-07-01|2008-02-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08942","name":"CSR Ltd"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2000-07-01","validTo":"2003-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|M08942|2000-07-01|2003-03-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08942","name":"CSR Ltd"},"object":{"type":"operator","id":"L17419","name":"Rinker Materials South Central, Inc."},"validFrom":"2000-07-01","validTo":"2003-03-31","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L17419|2000-07-01|M08942|2000-07-01|144626"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0042039","name":"Rinker Group Ltd"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2003-04-01","validTo":"2007-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|0042039|2003-04-01|2007-07-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0042039","name":"Rinker Group Ltd"},"object":{"type":"operator","id":"L17419","name":"Rinker Materials South Central, Inc."},"validFrom":"2003-04-01","validTo":"2007-07-09","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L17419|2000-07-01|0042039|2003-04-01|3565"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09149","name":"Cemex S A"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2007-07-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|M09149|2007-07-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09149","name":"Cemex S A"},"object":{"type":"operator","id":"L17419","name":"Rinker Materials South Central, Inc."},"validFrom":"2007-07-10","validTo":"2008-02-21","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L17419|2000-07-01|M09149|2007-07-10|145546"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"4001814","name":"Pleasant View 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":"4001814|0071891|2007-11-16|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13654","name":"Ready Mix USA Inc"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2008-01-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|M13654|2008-01-23|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0086165","name":"Aggregates USA LLC"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2008-02-22","validTo":"2009-04-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|0086165|2008-02-22|2009-04-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13654","name":"Ready Mix USA Inc"},"object":{"type":"operator","id":"0086165","name":"Aggregates USA LLC"},"validFrom":"2008-02-22","validTo":"2009-04-03","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|0086165|2008-02-22|M13654|2008-01-23|156774"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"object":{"type":"mine","id":"4001814","name":"Pleasant View Quarry"},"validFrom":"2009-04-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L16168|2009-04-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L16168","name":"Vulcan Construction Materials, LLC"},"validFrom":"2009-04-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L16168|2009-04-04|0071891|2007-11-16|10951"}},{"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":"2009-04-04","validTo":"2007-11-15","current":false,"derived":true,"evidenceMineId":"4001814","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4001814|L16168|2009-04-04|M00024|1950-01-01|101867"}}],"coverage":{"historyRecords":9,"edgeCount":24,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4001814","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"}}