Nessus I dont´t know where you get your information on SLW from but it certainly not correct.
The company is one of the most diversified there is with operations and projects in Mexico, Canada, the US, Peru, Chile, Argentina, Portugal, Greece and Sweden. At the end of this year they will participate in some way or another in 16 operational mines of which only one, Yauliyacu, is in Peru. For of change the biggest contributor of their silver are their Mexican operations with Penasquito being the biggest producer which, like the rest of their AG, they get for $4 an once. So if you own a decent amount of SLW shares you should'nt loose any sleep from Humala's future policy on the mining sector in Peru.