CSR Leaders or Hypocrites? What is Net Sustainability Gain?

CSR Leaders or Hypocrites?  What is Net Sustainability Gain?

Alcoa is company who demonstrates year after year a commitment to dialogue, accountability and transparency, in pursuit of sustainability, and delivers tangible measurable results, but has built a highly criticized smelter in Iceland, which is in conflict with good environmental practice. Does this make them hypocritical or simply a business which delivers more benefit to society via its core activities than the damage it does?