From a related article:<p>"... most recent survey carried out in the US showed 65 percent of dollar notes were contaminated with cocaine. "<p><a href="http://www.rsc.org/aboutus/news/pressreleases/2007/cocainebanknote.asp" rel="nofollow">http://www.rsc.org/aboutus/news/pressreleases/2007/cocaineba...</a>