{"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":"0600604","name":"Fairfield Resources Management Inc"},"operator":{"type":"operator","id":"L12695","name":"Fairfield Resources Management Inc"},"controller":{"type":"controller","id":"M09739","name":"Rock Acquisition Limited Partnership"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03000","name":"Kenneth W  Kovacs"},"object":{"type":"mine","id":"0600604","name":"Fairfield Resources Management Inc"},"validFrom":"1981-05-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|M03000|1981-05-26|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06620","name":"Dbd Inc"},"object":{"type":"mine","id":"0600604","name":"Fairfield Resources Management Inc"},"validFrom":"1985-03-01","validTo":"1988-01-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|L06620|1985-03-01|1988-01-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03000","name":"Kenneth W  Kovacs"},"object":{"type":"operator","id":"L06620","name":"Dbd Inc"},"validFrom":"1985-03-01","validTo":"1988-01-04","current":false,"derived":true,"evidenceMineId":"0600604","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|L06620|1985-03-01|M03000|1981-05-26|127648"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10399","name":"Fairfield Resources Inc"},"object":{"type":"mine","id":"0600604","name":"Fairfield Resources Management Inc"},"validFrom":"1988-01-05","validTo":"1991-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|L10399|1988-01-05|1991-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08104","name":"Alfred  Dube"},"object":{"type":"mine","id":"0600604","name":"Fairfield Resources Management Inc"},"validFrom":"1988-01-05","validTo":"1991-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|M08104|1988-01-05|1991-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08104","name":"Alfred  Dube"},"object":{"type":"operator","id":"L10399","name":"Fairfield Resources Inc"},"validFrom":"1988-01-05","validTo":"1991-12-31","current":false,"derived":true,"evidenceMineId":"0600604","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|L10399|1988-01-05|M08104|1988-01-05|142730"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12695","name":"Fairfield Resources Management Inc"},"object":{"type":"mine","id":"0600604","name":"Fairfield Resources Management Inc"},"validFrom":"1992-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|L12695|1992-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09739","name":"Rock Acquisition Limited Partnership"},"object":{"type":"mine","id":"0600604","name":"Fairfield Resources Management Inc"},"validFrom":"1992-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|M09739|1992-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09739","name":"Rock Acquisition Limited Partnership"},"object":{"type":"operator","id":"L12695","name":"Fairfield Resources Management Inc"},"validFrom":"1992-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0600604","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0600604|L12695|1992-01-01|M09739|1992-01-01|147446"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0600604","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"}}