The ongoing project at Los Pelambres copper mine in Chile will cost $2.2bn, up from last year's estimate of $1.7bn and a 70% jump from the original $1.3bn figure.
Bolivia has 9 million tonnes of identified lithium resources buried beneath its salt flats, yet the country has had barely any production of lithium chemicals.
Researchers found higher levels of silica dust in the lung tissue of contemporary coal miners compared to the lung tissue of previous generations of coal miners.