Most of the juniors are based and trade up here in Canada. You should visit the message boards at
www.stockhouse.ca where there is a ton of discussion around uranium stocks. BTW, CCJ is CCO on the TSX exchange.
If you like base and precious metals investing, have a look at the TSX Venture (TSX-V) exchange as it's like the wild west of stock investing. Stocks move +/- 10% in on most days. I do consulting for small cap public mining companies and sometimes get paid partially with shares so I like to stay involved in the metals sector.