{"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":"2026-10-17T05:35:58.500035+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":"1700939","name":"Madawaska Plant"},"operator":{"type":"operator","id":"0135654","name":"Trombley Redi-Mix"},"controller":{"type":"controller","id":"0115483","name":"Roy J  Trombley; Craig R  Trombley"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0135654","name":"Trombley Redi-Mix"},"object":{"type":"mine","id":"1700939","name":"Madawaska Plant"},"validFrom":"2014-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1700939|0135654|2014-06-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0115483","name":"Craig R  Trombley et al"},"object":{"type":"mine","id":"1700939","name":"Madawaska Plant"},"validFrom":"2014-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1700939|0115483|2014-06-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115483","name":"Craig R  Trombley et al"},"object":{"type":"operator","id":"0135654","name":"Trombley Redi-Mix"},"validFrom":"2014-06-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"1700939","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1700939|0135654|2014-06-24|0115483|2014-06-24|21742"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115483","name":"Roy J  Trombley et al"},"object":{"type":"operator","id":"0135654","name":"Trombley Redi-Mix"},"validFrom":"2014-06-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"1700939","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1700939|0135654|2014-06-24|0115483|2014-06-24|21743"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1700939","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}