http://www.statenews.com/article.phtml?pk=29446 "Liebler (the EL police chief) said an estimated several hundred to 1,000 tear-gas canisters were deployed to break up crowds in Cedar Village after people began throwing bottles and rocks at police. In March Madness-related disturbances in 1999, more than 1,000 canisters of tear gas were released. In the 2003 disturbances, police said 30-40 canisters were released."