Kompania Węglowa is the largest coal mining company in Poland and Europe producing around 48 million tonnes of coal every year, from 23 mines.
Wikipedia https://en.wikipedia.org/wiki/Kompania_Węglowa
Email centrala@kwsa.pl
Phone +48 32 7572 211
Coordinates 50°15'7.977" N 19°1'23.412" E
