Newmont released the findings and recommendations from a study [1] of its security procedures and practices at the Yanacocha mine in Peru. These findings were evaluated based on the Voluntary Principles on Security and Human Rights [2], to which Yanacocha is a signatory, as well as all national and international complementary regulations.
Links:
[1] http://preview.newmont.com/sites/default/files/VP Human Rights Gino Costa Executive Summary FINAL 063009_0.pdf
[2] http://www.voluntaryprinciples.org/