Rio, which could become the world's top iron ore producer this year, was beset by weather and operational issues in the first quarter which caused it to cut its annual guidance.
The lightweight metal used in cars, airplanes and drinks cans is touted as a green alternative, yet it’s the most carbon-intensive industrial metal to produce.
Opinion: Mining companies are generally quite good at promoting social projects undertaken in the communities in which they operate, but full disclosure could show how much the mining companies' support was compared to the total income of these communities.
Technologies such as autonomous rail-cars and increased automation can lower the impact of the industry on the environment as well as raise profit margins, the company said.