MECHEL OAO ANNOUNCES WORK SUSPENSION AT THE NEW-OLZHERASSKAYA UNDERGROUND MINE
Moscow, Russia – September 3, 2010. – Mechel OAO (NYSE: MTL), one of the leading
Russian mining and steel companies, announces work suspension at
New-Olzherasskaya Underground mine which is a part of Southern Kuzbass OAO due
to coal self-heating in the long wall face No. 21-1-7.
In the middle of August 2010, coal self-heating occurred at the production area
of the long wall face No. 21-1-7 of New-Olzherasskaya Underground mine (Southern
Kuzbass OAO, Mechel’s coal mining subsidiary). Mining operations are currently
suspended.
Southern Kuzbass OAO experts developed measures to prevent possible negative
consequences of this accident. The production area is temporally isolated.
Specialists constantly gather information about gas concentration in the
isolated area by means of remote sampling as well as through surface drill
holes. The production area is being fed with inert foam and inert materials.
At the present moment the self-heating center is being isolated. The entire mine
infrastructure – transport, ventilation system, dewatering, power facilities,
drifting faces and stopes are in working condition and safe.
Suspension of the mine will not cause delay in coal deliveries to customers
since there is enough coal at the New-Olzherasskaya Underground mine warehouse.
Coal from the warehouse together with coal from Olzherasskiy Open Pit is being
washed by Kuzbasskaya Coal Washing Plant and delivered to the customers.
According to the preliminary estimates elimination of accident may take up to 6
months.
Miners from New-Olzherasskaya Underground mine take part in recovery works, a
part of employees were moved to Sibirginskaya mine and Department for Mining
Equipment Installation.
New-Olzherasskaya Underground mine was commissioned on September 29, 2006. The
mine produces coal of GZhO grade. The long wall face No. 21-1-7 was launched at
the beginning of May, 2010. It’s coal reserves amount to 3 mln. tonnes and
length is about 200 meters.

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Mechel OAO
Ekaterina Videman
Tel: + 7 495 221 88 88
ekaterina.videman@mechel.com
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Mechel is one of the leading Russian mining and metals companies. Mechel unites
producers of coal, iron ore, nickel, steel, rolled products, and hardware.
Mechel products are marketed domestically and internationally.
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Some of the information in this press release may contain projections or other
forward-looking statements regarding future events or the future financial
performance of Mechel, as defined in the safe harbor provisions of the U.S.
Private Securities Litigation Reform Act of 1995. We wish to caution you that
these statements are only predictions and that actual events or results may
differ materially. We do not intend to update these statements. We refer you to
the documents Mechel files from time to time with the U.S. Securities and
Exchange Commission, including our Form 20-F. These documents contain and
identify important factors, including those contained in the section captioned
“Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” in our
Form 20-F, that could cause the actual results to differ materially from those
contained in our projections or forward-looking statements, including, among
others, the achievement of anticipated levels of profitability, growth, cost and
synergy of our recent acquisitions, the impact of competitive pricing, the
ability to obtain necessary regulatory approvals and licenses, the impact of
developments in the Russian economic, political and legal environment,
volatility in stock markets or in the price of our shares or ADRs, financial
risk management and the impact of general business and global economic
conditions.