{"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":"2900248","name":"No Agua Mine & Mill"},"operator":{"type":"operator","id":"L14728","name":"Imerys Perlite USA, Inc."},"controller":{"type":"controller","id":"M11763","name":"Imerys S A"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10700","name":"Manville Sales Corp"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"1950-01-01","validTo":"1991-07-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L10700|1950-01-01|1991-07-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00322","name":"Manville Corp"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"1950-01-01","validTo":"1991-07-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|M00322|1950-01-01|1991-07-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00322","name":"Manville Corp"},"object":{"type":"operator","id":"L10700","name":"Manville Sales Corp"},"validFrom":"1950-01-01","validTo":"1991-07-25","current":false,"derived":true,"evidenceMineId":"2900248","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L10700|1950-01-01|M00322|1950-01-01|109388"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13026","name":"Perlite Inc"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"1991-07-26","validTo":"2005-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L13026|1991-07-26|2005-07-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09390","name":"Alleghany Corp"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"1991-07-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|M09390|1991-07-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09390","name":"Alleghany Corp"},"object":{"type":"operator","id":"L13026","name":"Perlite Inc"},"validFrom":"1991-07-26","validTo":"2005-07-14","current":false,"derived":true,"evidenceMineId":"2900248","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L13026|1991-07-26|M09390|1991-07-26|146290"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09390","name":"Alleghany Corp"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"1992-11-16","validTo":"2005-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|M09390|1992-11-16|2005-07-14"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0063084","name":"Perlite Inc"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"2005-07-15","validTo":"2007-03-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|0063084|2005-07-15|2007-03-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"2005-07-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|M11763|2005-07-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"operator","id":"0063084","name":"Perlite Inc"},"validFrom":"2005-07-15","validTo":"2007-03-25","current":false,"derived":true,"evidenceMineId":"2900248","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|0063084|2005-07-15|M11763|2005-07-15|152298"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14728","name":"Imerys Perlite USA, Inc."},"object":{"type":"mine","id":"2900248","name":"No Agua Mine & Mill"},"validFrom":"2007-03-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L14728|2007-03-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09390","name":"Alleghany Corp"},"object":{"type":"operator","id":"L14728","name":"Imerys Perlite USA, Inc."},"validFrom":"2007-03-26","validTo":"2005-07-14","current":false,"derived":true,"evidenceMineId":"2900248","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L14728|2007-03-26|M09390|1992-11-16|146294"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"operator","id":"L14728","name":"Imerys Perlite USA, Inc."},"validFrom":"2007-03-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"2900248","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900248|L14728|2007-03-26|M11763|2005-07-15|152299"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2900248","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"}}