=647590&mlndex=1253463568&hurl=htt=%3A//www.institutionali nvestor.com/Article/3021584/New-ETFs-Backed-by-l=dustrial-Metals.html">New ETFs Backed by Industrial Metals Not all that glitters =s gold. There's another family of metals that are precious for their in=ustrial uses, most notably, copper, for which demand