May 13 (Reuters) - Corsa Coal Corp CSO.V :
* CZECH GROUP SEV.EN ENERGY SAYS ACQUIRES 17.1% STAKE IN CORSA COAL CORP
* CZECH GROUP SEV.EN ENERGY SAYS SHARES ACQUIRED FOR C$0.22 A SHARE IN PRIVATE TRANSACTION, TOTAL VALUE C$3.6 MILLION
* CZECH GROUP SEV.EN ENERGY SAYS EXPECTS IN LONG-TERM STRONG DEMAND FOR METALLURGICAL COAL FROM STEEL INDUSTRY, PRICE GROWTH IN COMING YEARS