Exhibit 8.1
 Date controlacquired/ date of
    
    Interest in voting stock held byName of subsidiary
    
    Registered in
    
    Core business
    
    incorporation (*)
    
    the Group at December 31,2010
    
    2009
    
    2008Mechel
International Holdings GmbH (MIH)1
    
    Switzerland
    
    Holding and trading
    
    July 1, 1995
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Mechel Metal Supply Limited (MMS)
    
    Liechtenstein
    
    Trading
    
    Oct 30, 2000
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Mechel Trading House (MTH)
    
    Russia
    
    Trading
    
    June 23, 1997
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Southern Kuzbass Coal Company (SKCC), including
its most significant subsidiaries:
    
    Russia
    
    Coal mining
    
    Jan 21, 1999
    
    
    96.6
    %
    
    
    95.9
    %
    
    
    95.4
    %Tomusinsk Open Pit Mine (TOPM)
    
    Russia
    
    Coal mining
    
    Jan 21, 1999
    
    
    74.5
    %
    
    
    74.5
    %
    
    
    74.5
    %Chelyabinsk Metallurgical Plant (CMP)
    
    Russia
    
    Steel products
    
    Dec 27, 2001
    
    
    94.2
    %
    
    
    94.2
    %
    
    
    94.2
    %Southern Urals Nickel Plant (SUNP)
    
    Russia
    
    Nickel
    
    Dec 27, 2001
    
    
    84.1
    %
    
    
    84.1
    %
    
    
    84.1
    %Vyartsilya Metal Products Plant (VMPP)
    
    Russia
    
    Steel products
    
    May 24, 2002
    
    
    93.3
    %
    
    
    93.3
    %
    
    
    93.3
    %Beloretsk Metallurgical Plant (BMP)
    
    Russia
    
    Steel products
    
    June 14, 2002
    
    
    91.4
    %
    
    
    91.4
    %
    
    
    90.4
    %Mechel Targoviste S.A.
    
    Romania
    
    Steel products
    
    Aug 28, 2002
    
    
    86.6
    %
    
    
    86.6
    %
    
    
    86.6
    %Urals Stampings Plant (USP)
    
    Russia
    
    Steel products
    
    April 24, 2003
    
    
    93.8
    %
    
    
    93.8
    %
    
    
    93.8
    %Korshunov Mining Plant (KMP)
    
    Russia
    
    Iron ore mining
    
    Oct 16, 2003
    
    
    85.6
    %
    
    
    85.6
    %
    
    
    85.6
    %Mechel Campia Turzii S.A.
    
    Romania
    
    Steel products
    
    June 20, 2003
    
    
    86.6
    %
    
    
    86.6
    %
    
    
    86.6
    %Mechel Nemunas (MN)
    
    Lithuania
    
    Steel products
    
    Oct 15, 2003
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Mechel Energo
    
    Russia
    
    Power trading
    
    Feb 3, 2004
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Port Posiet
    
    Russia
    
    Transportation
    
    Feb 11, 2004
    
    
    97.1
    %
    
    
    97.1
    %
    
    
    97.1
    %Kaslinsky Architectural Art Casting Plant
    
    Russia
    
    Steel products
    
    April 14, 2004
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Izhstal
    
    Russia
    
    Steel products
    
    May 14, 2004
    
    
    88.4
    %
    
    
    88.4
    %
    
    
    88.2
    %Port Kambarka
    
    Russia
    
    Transportation
    
    April 27, 2005
    
    
    90.4
    %
    
    
    90.4
    %
    
    
    90.4
    %Mechel Service**
    
    Russia
    
    Trading
    
    May 5, 2005
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Mechel
Trading AG.
    
    Switzerland
    
    Trading
    
    Dec 20, 2005
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Metals Recycling
    
    Russia
    
    Scrap collecting
    
    March 14, 2006
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Moscow Coke and Gas Plant (Moskoks)
    
    Russia
    
    Coke production
    
    Oct 4, 2006
    
    
    99.5
    %
    
    
    99.5
    %
    
    
    99.5
    %Southern Kuzbass Power Plant (SKPP)
    
    Russia
    
    Power generation
    
    April 19, 2007
    
    
    98.3
    %
    
    
    98.3
    %
    
    
    98.3
    %Mechel Finance
    
    Russia
    
    Corporate finance
    
    June 6, 2007
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Kuzbass Power Sales Company (KPSC)
    
    Russia
    
    Power sales
    
    June 30, 2007
    
    
    72.1
    %
    
    
    72.1
    %
    
    
    72.1
    %Bratsk Ferroalloy Plant (BFP)
    
    Russia
    
    Ferroalloy production
    
    Aug 6, 2007
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Yakutugol
    
    Russia
    
    Coal mining
    
    Oct 19, 2007
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    100.0
    %Mechel-Carbon
    
    Switzerland
    
    Trading
    
    April 2, 2008
    
    
    99.2
    %
    
    
    90.0
    %
    
    
    Ductil Steel S.A. (Ductil Steel)
    
    Romania
    
    Steel products
    
    April 8, 2008
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    Oriel Resources Limited (Oriel Resources)
    
    Great Britain
    
    Chrome and nickel
    
    Apr 17, 2008
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    Mechel-Mining OAO
    
    Russia
    
    Holding
    
    April 18, 2008
    
    
    98.69
    %
    
    
    98.69
    %HBL Holding GmbH (HBL)
    
    Germany
    
    Trading
    
    Sept 26, 2008
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    Bluestone companies
    
    USA
    
    Coal mining
    
    May 7, 2009
    
    
    100.0
    %
    
    
    100.0
    %
    
    
    Laminorul S.A.
    
    Romania
    
    Steel products
    
    Feb 25, 2010
    
    
    90.9
    %
    
    
    
    
    
    
    Ramateks
    
    Turkey
    
    Trading
    
    June 18, 2010
    
    
    100.0
    %
    
    
    
    
    
    
    Toplofikatsia Rousse (TPP Rousse)
    
    Bulgaria
    
    Power generation
    
    Dec 9, 2010
    
    
    100.0
    %
    
    
    
    
    
    
    
 
 *
    
    Date, when a control interest was acquired or a new company established by either the Group or
Controlling Shareholders.**
    
    On March 10, 2009, a new subsidiary of Mechel OAO, Mechel Service Global B.V., was
incorporated.1
    
    Formerly  Mechel Trading AG (MT). Renamed on December 20, 2005. 1