Glencore has become the unwilling poster child of a campaign to change the constitution so Swiss companies are liable at home for human rights abuses or environmental harm they cause abroad.
The initiative aims to minimise diesel exhaust and introduce vehicle collision avoidance technology by 2025, and hopes to see greenhouse gas emission-free surface mining vehicles used widely by 2040.
Investors are putting pressure on gold miners, whose high greenhouse gas emissions have been less scrutinized, to report transparently and take concrete steps to curb them.