According to the Federal Anti-Monopoly Service, Mechel abused its dominant market position charging artificially high prices for its products, refused to sign contracts for deliveries, and supported a policy of price fixing.
Russia's anti-monopoly watchdog launched a probe into the activities of Mechel after Prime Minister Vladimir Putin accused the company late in July of price fixing and ordered an investigation.
The anti-monopoly watchdog is also conducting a probe into the activities of Raspadsky Coal and Evraz Holding, following accusations that the companies have also been involved in price fixing.
Raspadsky Coal, Evraz Holding, and Mechel control over 50% of Russia's coking coal market.
Analysts say Mechel may face a fine of up to $100 million, Evraz Holding $70 million and Raspadsky Coal $40 million.