The reports given by BHP Billiton’s in the year 2016 and 2017 first shows a picture that the company was working so hard to improve their environmental performance ("BHP Billiton Sustainability Report 2016", 2018; "BHP Sustainability Report Between 2017", 2018). The reports given by BHP Billiton’s in the year 2016 and 2017 first shows a picture that the company was working so hard to improve their environmental performance ("BHP Billiton Sustainability Report 2016", 2018; "B