Kinross, which operated in Russia for about 25 years, said the price change followed a review by a recently formed commission to control foreign investments.
According to a research group led by MIT, waste yeast discarded from a single brewery in Boston could be enough to treat the city's entire water supply.
The facility is expected to be located within an existing industrial area on the Gulf Coast of the state of Texas and targeted to be operational in financial year 2025.