Exhibit 8.1



|                                                             |  |               |  |                           |  |                                            |  |                                                             |       |    
|------------------------------------------------------------ |  | ------------- |  | ------------------------- |  | ------------------------------------------ |  | ----------------------------------------------------------- | ----- | ---
|Name of subsidiary                                           |  | Registered in |  | Core business             |  | Date
controlacquired/date ofincorporation* |  | Interest in votingstock held bythe Groupat December 31,2016 |      
|Southern Kuzbass Coal Company (SKCC)                         |  | Russia        |  | Coal mining               |  | January 1999                               |  |                                                             | 96.6  | %  
|Chelyabinsk Metallurgical Plant (CMP)                        |  | Russia        |  | Steel products            |  | December 2001                              |  |                                                             | 94.2  | %  
|Vyartsilya Metal Products Plant (VMPP)                       |  | Russia        |  | Steel products            |  | May 2002                                   |  |                                                             | 93.3  | %  
|Beloretsk Metallurgical Plant (BMP)                          |  | Russia        |  | Steel products            |  | June 2002                                  |  |                                                             | 94.8  | %  
|Urals Stampings Plant (USP)                                  |  | Russia        |  | Steel products            |  | April 2003                                 |  |                                                             | 93.8  | %  
|Korshunov Mining Plant (KMP)                                 |  | Russia        |  | Iron ore mining           |  | October 2003                               |  |                                                             | 90.0  | %  
|Mechel Nemunas (MN)                                          |  | Lithuania     |  | Steel products            |  | October 2003                               |  |                                                             | 100.0 | %  
|Mechel Energo                                                |  | Russia        |  | Power generation and sale |  | February 2004                              |  |                                                             | 100.0 | %  
|Port Posiet                                                  |  | Russia        |  | Transshipment             |  | February 2004                              |  |                                                             | 97.6  | %  
|Izhstal                                                      |  | Russia        |  | Steel products            |  | May 2004                                   |  |                                                             | 90.0  | %  
|Port Kambarka                                                |  | Russia        |  | Transshipment             |  | April 2005                                 |  |                                                             | 90.4  | %  
|Mechel Service                                               |  | Russia        |  | Trading                   |  | May 2005                                   |  |                                                             | 100.0 | %  
|Mechel Coke                                                  |  | Russia        |  | Coke production           |  | June 2006                                  |  |                                                             | 100.0 | %  
|Moscow Coke and Gas Plant (Moskoks)                          |  | Russia        |  | Coke production           |  | October 2006                               |  |                                                             | 99.5  | %  
|Southern Kuzbass Power Plant (SKPP)                          |  | Russia        |  | Power generation          |  | April 2007                                 |  |                                                             | 98.3  | %  
|Kuzbass Power Sales Company (KPSC)                           |  | Russia        |  | Electricity distribution  |  | June 2007                                  |  |                                                             | 72.1  | %  
|Bratsk Ferroalloy Plant (BFP)                                |  | Russia        |  | Ferrosilicon production   |  | August 2007                                |  |                                                             | 100.0 | %  
|Yakutugol                                                    |  | Russia        |  | Coal mining               |  | October 2007                               |  |                                                             | 100.0 | %  
|Port Temryuk                                                 |  | Russia        |  | Transshipment             |  | March 2008                                 |  |                                                             | 100.0 | %  
|Mechel Carbon AG                                             |  | Switzerland   |  | Trading                   |  | April 2008                                 |  |                                                             | 100.0 | %  
|HBL Holding GmbH (HBL)                                       |  | Germany       |  | Trading                   |  | September 2008                             |  |                                                             | 100.0 | %  
|Mechel Service Stahlhandel Austria GmbH and its subsidiaries |  | Austria       |  | Trading                   |  | September 2012                             |  |                                                             | 100.0 | %  
|Elgaugol                                                     |  | Russia        |  | Coal mining               |  | August 2013                                |  |                                                             | 51.0  | %**
|Elga-road                                                    |  | Russia        |  | Railroad transportation   |  | January 2016                               |  |                                                             | 51.0  | %**



|* | Date, when a control interest was acquired or a new company established.
|- | ------------------------------------------------------------------------

|** | In 2016, the Group sold 49% stakes in Elgaugol and Elga-road to Gazprombank. Simultaneously with this transaction, the Group granted to Gazprombank a put option to sell 49% stakes in these companies to the Group. The
transaction in fact represents a financial liability, and these entities are consolidated based on 100% ownership (Note 6, 10.4).
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------