Taming metal volcano's turns out to not be that difficult with a steam turbine so long as you add enough water to the system to keep the temperature average low. This allows you to use the steam turbines output to self cool the turbine. I have a strange feeling they are going to patch the steam turbine so that the output is 95C or greater depending on the temperature of the turbine.
Save game file of the gold tamer
Save game file of the Iron tamer