Iron, steel, metal...it's all the same?

Ask sculptor, Ralph Berger that question because I sure don't know
the difference. Maybe there is none, but when I look at what he does
with it, I see ART. His blog is
filled with new pieces that he
has created from "found objects"
bigger than our version of
found objects... bouys, enormous saw blades, pressure tanks and whatever. Check it out. It is truly amazing esp. when I think of all the work that it must take to finish these.