Attendees include scientists, engineers, technology developers, equipment suppliers, government officials, utility representatives, and owners of environmental problems. ICEM is a conference that attracts more business organizations than universities. Sponsors include large companies such as AREVA, URS, CH2MHill, and Energy Solutions, and multiple smaller companies. In addition, sponsors include both Non-Government Organizations (NGO) as well as governmental organizations such as the NRC and IAEA. The first ICEM conference was held in Hong Kong in 1987, followed by Kyoto, Japan, in 1989; Seoul, Korea, in 1991; Prague, Czech Republic, in 1993; Berlin, Germany, in 1995; Singapore in 1997; Nagoya, Japan, in 1999; Bruges, Belgium, in 2001 and 2007; Oxford, England, in 2003; Glasgow, Scotland, in 2005; Liverpool, UK, in 2009; Tsukuba, Japan, in 2010, Reims, France, in 2011, and Brussels, Belgium, in 2013. Over 30 countries generally participate (in 2013, there were 53 countries in attendance).