{"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":"2901668","name":"Tesuque"},"operator":{"type":"operator","id":"L06590","name":"Alexander Sand & Gravel"},"controller":{"type":"controller","id":"M05249","name":"Richard A  Alexander"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00560","name":"Loomis Construction Company Inc"},"object":{"type":"mine","id":"2901668","name":"Tesuque"},"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":"2901668|M00560|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05249","name":"Richard A  Alexander  et al"},"object":{"type":"mine","id":"2901668","name":"Tesuque"},"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":"2901668|M05249|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00678","name":"Loomis Construction Company Inc"},"object":{"type":"mine","id":"2901668","name":"Tesuque"},"validFrom":"1979-01-01","validTo":"1983-06-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901668|L00678|1979-01-01|1983-06-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00560","name":"Loomis Construction Company Inc"},"object":{"type":"operator","id":"L00678","name":"Loomis Construction Company Inc"},"validFrom":"1979-01-01","validTo":"1983-06-27","current":false,"derived":true,"evidenceMineId":"2901668","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901668|L00678|1979-01-01|M00560|1950-01-01|113083"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06590","name":"Alexander Sand & Gravel"},"object":{"type":"mine","id":"2901668","name":"Tesuque"},"validFrom":"1983-06-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901668|L06590|1983-06-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05249","name":"Richard A  Alexander  et al"},"object":{"type":"operator","id":"L06590","name":"Alexander Sand & Gravel"},"validFrom":"1983-06-28","validTo":null,"current":true,"derived":true,"evidenceMineId":"2901668","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2901668|L06590|1983-06-28|M05249|1950-01-01|134018"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2901668","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"}}