Russian wheat prices largely unchanged despite reports of radioactive contamination in the Ural Mountains. The current freight-on-board price of Black Sea wheat is around $185-$186 per tn, unchanged on week. On the Chicago Board of Trade, however, the most-active March wheat contract had risen 1% to touch intra-day high of $4.445 per bushel on Wednesday following the reports. US markets are shut today for Thanksgiving Day.