Building new roads to reach mines would allow illegal loggers, land grabbers and ranchers easier access to relatively untouched parts of the forest, study says.
The world's second-biggest producer of wheat and rice relies mostly on annual import deals and spot purchases to meet the rising demand for fertilizers.
After a brutal second quarter, investors in the world’s 50 biggest mining companies are in full retreat as metal prices slump and uncertainty grips the sector.
The project would produce up to 250,000 tonnes of potash per year and have an expected life of over 100 years, according to federal government website.