Weak Mexican Peso
The Peso is weakening more and faster than the price of gold, which is something to keep in mind. Notice that in the latest MD&A they report costs going down down from the weaker Peso. This should benefit all Mexican producers.
https://www.google.com/finance?chdnp=0&chdd=1&chds=1&chdv=1&chvs=Linear&chdeh=0&chfdeh=0&chdet=1479940292424&chddm=91146&q=CURRENCY:MXNUSD&ntsp=0&ei=vRg2WJmGJYKrjAH1r4DoCg
Down about 12% over the past 3 months.