One of Poland’s largest suppliers of feldspar is Strzeblowskie Kopalnie Surowców Mineralnych, based in Sobotka and nestled against Mount Sleza. This area in Lower Silesia is rich in minerals with Sleza a centre of granite production. Strzeblowskie Kopalnie has been operating a fleet of Doosan equipment at its 100hectare quarry, the latest being a new DL420-5 Stage IV compliant wheeled loader. The quarry produces feldspar and granite aggregates, much of it for use in the ceramics industry. Janusz Kozyrski, c