I think the problem with social conflict and human rights is a lot about the absence of the state. Where the state is not present to redirect benefits received from mining companies, locals typically see few if any of these benefits.
Incidentally, because my colleague mentioned my research, those five countries are the largest in the region. They constitute 85% of the mining cases. I don't think it would change the results, but I am sensitive to the notion that the Guatemalan case represents a particularly low level of governance, which is problematic for human rights.