Mike Henry to take the role of CEO from January 1.
Shareholders throw out plans to abandon BHP's links to pro-coal lobbying groups.
Reducing the impurities in its iron ore could benefit its Scope Three plans.
BHP calls for Constitutional recognition for Indigenous Australians.
Aims to also make collision avoidance technology available to miners by 2025.
Olympic Dam plant outage causes 21% drop in Australian copper production.