Utterly Mad

Glorious. I've been digging crosshair mines at several levels in the faint hope of finding something, but nothing has turned up. I've hit rock bottom, so if ou're careful you can prod your way into hitting the magma sea and then adamantine might be an option.

Or failing that, rig up a way to flood the magma sea and at the very least we can switch the squad to using obsidian swords. o3o