Combined pre-tax earnings at medium and large enterprises soared 37.6 percent in January-February 2011 to 1.262 trillion rubles ($45 billion), from 916.7 billion rubles in the same period of last year, the State Statistics Service said. Some 34,500 companies made a combined 1.518 trillion rubles in profit, while 20,200 others incurred losses totaling 256 billion rubles. Companies working in the natural resources sector had combined profits […]