I think there are a number of numbers out there. It depends on the size and scale and the purpose that the reactor is designed to serve.
We have to remember that there's more than one medical isotope. There are dozens of medical isotopes. Some can be produced on cyclotrons, like the ones at Sherbrooke or McMaster, but some can only be produced at nuclear reactors. On the cost for replacement energy, I've heard hundreds of millions of dollars to a billion dollars. I've looked at the cost to upgrade the McMaster nuclear reactor, and it's closer to $200 million. There's a range of possibilities. It depends on whether you want the Volkswagen or the Cadillac, I guess.
The researchers in Canada flock to nuclear reactors because of the intense neutron fluxes that are available. We're there to produce neutrons, whether they are for research or for producing medical isotopes. We're multi-purpose; therefore, investment in that type of facility benefits Canadians on a number of different levels for the same investment. I believe that nuclear reactors, as well as cyclotrons, need to be part of the mix going forward.