The Czech Republic blocked an attempted purchase by Iran in January of $61 million worth of compressors, which can be used in centrifuge cascades for uranium enrichment.  According to a draft of the United Nations Security Council's Panel of Experts report, seen by Reuters, Iran attempted to buy the compressors from the U.S.-owned company Howden CKD Compressors based in Prague.  After false documentation intended to bypass export controls raised suspicions, Czech authorities blocked the transaction.