{"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":"3001254","name":"MANCHESTER PLANT"},"operator":{"type":"operator","id":"L17589","name":"Dolomite Group"},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01627","name":"John M  Odenbach"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"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":"3001254|M01627|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02219","name":"Concrete Materials Inc"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"validFrom":"1950-01-01","validTo":"1986-03-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L02219|1950-01-01|1986-03-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01965","name":"Hague Peter R"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"validFrom":"1950-01-01","validTo":"1986-12-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|M01965|1950-01-01|1986-12-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01965","name":"Hague Peter R"},"object":{"type":"operator","id":"L02219","name":"Concrete Materials Inc"},"validFrom":"1950-01-01","validTo":"1986-03-18","current":false,"derived":true,"evidenceMineId":"3001254","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L02219|1950-01-01|M01965|1950-01-01|122404"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01807","name":"Dolomite Products Company Inc"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"validFrom":"1986-03-19","validTo":"2000-06-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L01807|1986-03-19|2000-06-13"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01627","name":"John M  Odenbach"},"object":{"type":"operator","id":"L01807","name":"Dolomite Products Company Inc"},"validFrom":"1986-03-19","validTo":"2000-06-13","current":false,"derived":true,"evidenceMineId":"3001254","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L01807|1986-03-19|M01627|1950-01-01|119693"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17588","name":"Dolomite Products Company Inc"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"validFrom":"2000-06-14","validTo":"2002-09-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L17588|2000-06-14|2002-09-08"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"validFrom":"2000-06-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|M06183|2000-06-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L17588","name":"Dolomite Products Company Inc"},"validFrom":"2000-06-14","validTo":"2002-09-08","current":false,"derived":true,"evidenceMineId":"3001254","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L17588|2000-06-14|M06183|2000-06-14|136884"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17589","name":"Dolomite Group"},"object":{"type":"mine","id":"3001254","name":"MANCHESTER PLANT"},"validFrom":"2002-09-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L17589|2002-09-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L17589","name":"Dolomite Group"},"validFrom":"2002-09-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"3001254","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3001254|L17589|2002-09-09|M06183|2000-06-14|136885"}}],"coverage":{"historyRecords":4,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3001254","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"}}