KIEV, April 18 - Ukraine’s biggest privately-held power and mining company, Donbass Fuel-Energy Company, or DTEK, announced Friday it will invest 4.8 million hryvnias ($950 million) in modernization of its coal extracting arm by 2012.

The modernization of PavlohradVuhillia will boost its coal output by 45% to more than 18 million metric tons of coal annually by 2012, up from 12.36 million mt produced in 2007, DTEK said.