On 30 November 2011 SIEMAG TECBERG concluded an agreement for the modernization of the mine shaft hoisting system. The ower PG Silesia - Czech Energeticky a Prumyslovy Holding - is a leading strategy investor in the energy sector as well as in mining and industry sectors. As of 2012, Silesia will start to produce high-quality coal, mainly for the energy sector and its specific forms for retail sale. Silesia also sells coal mine gas (methane), stone for building purposes, and will provide solutions for clean energy storage of minerals.