Federal Anti Monopoly Service opens investigation into Evraz and Raspadskaya
The watchdog claims the companies abused their dominating position in the coking coal market.
Along with Mechel, Raspadskaya Coal and Evraz Holding control over 50% of the market.
Analysts say that prices began to rise significantly last year and roughly doubled by April 2008.
The FAS claims the companies were artificially creating a shortage of certain types of coking coal on the market.