{"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":"4407073","name":"Ashland Plant"},"operator":{"type":"operator","id":"L13909","name":"Aggregate Industries"},"controller":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"1950-01-01","validTo":"2009-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|M07336|1950-01-01|2009-04-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01199","name":"Robert Brett House"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2002-07-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|M01199|2002-07-15|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050929","name":"Brett Aggregates Inc"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2003-03-28","validTo":"2008-06-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|0050929|2003-03-28|2008-06-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01199","name":"Robert Brett House"},"object":{"type":"operator","id":"0050929","name":"Brett Aggregates Inc"},"validFrom":"2003-03-28","validTo":"2008-06-23","current":false,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|0050929|2003-03-28|M01199|2002-07-15|117376"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15512","name":"Mid-Atlantic Materials Inc"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2008-06-24","validTo":"2011-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L15512|2008-06-24|2011-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"operator","id":"L15512","name":"Mid-Atlantic Materials Inc"},"validFrom":"2008-06-24","validTo":"2009-04-29","current":false,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L15512|2008-06-24|M07336|1950-01-01|140806"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2009-04-30","validTo":"2015-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|M01644|2009-04-30|2015-07-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2009-04-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|M01644|2009-04-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"operator","id":"L15512","name":"Mid-Atlantic Materials Inc"},"validFrom":"2009-04-30","validTo":"2011-06-30","current":false,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L15512|2008-06-24|M01644|2009-04-30|120002"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13909","name":"Aggregate Industries"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2011-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L13909|2011-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"operator","id":"L13909","name":"Aggregate Industries"},"validFrom":"2011-07-01","validTo":"2015-07-09","current":false,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L13909|2011-07-01|M01644|2009-04-30|119948"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"operator","id":"L13909","name":"Aggregate Industries"},"validFrom":"2011-07-01","validTo":"2009-04-29","current":false,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L13909|2011-07-01|M07336|1950-01-01|140807"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2015-07-10","validTo":"2025-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|0119681|2015-07-10|2025-06-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"L13909","name":"Aggregate Industries"},"validFrom":"2015-07-10","validTo":"2025-06-22","current":false,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L13909|2011-07-01|0119681|2015-07-10|23139"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"mine","id":"4407073","name":"Ashland Plant"},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|0193740|2025-06-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"operator","id":"L13909","name":"Aggregate Industries"},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"4407073","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4407073|L13909|2011-07-01|0193740|2025-06-23|41428"}}],"coverage":{"historyRecords":7,"edgeCount":16,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4407073","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"}}