On the exploration side there is, of course, no production revenue. Companies such as Tara's and other exploration companies rely solely on investor confidence. The past few years, as you've seen such market instability and recession, have affected individual investors' investment decisions, which brings us back to having incentives such as flow-through share financing and mineral exploration tax credits, which provide additional incentive for an individual investor to consider exploration projects even when markets are unstable.
On October 25th, 2011. See this statement in context.