They're now sealed off after explosions and fatalities. They were sealed off in the 1950s. They're filled with water at 20° to 25°.
There are several industries that have used that incredible resource, but it's never seemed to me that we've maximized the purpose. You've outlined a broader vision of the use for that geothermal energy. Could you just expand on some of the opportunities that might be there that we've missed?