Aufstände in Oberschlesien
After World War I, in 1918, Poland regained independence, and following the Polish Silesian Uprisings Knurów was reintegrated with Poland. In the interwar period, Knurów developed intensively. New schools, stadiums, a pipeline connecting with Bełk and the first synthetic ammonia plant in Poland were built. In 1923, a monument to the participants of the Silesian Uprisings was unveiled. The coal industry continued growing well in the 20th century, and doubled its output with a new mine being built in 1961 in Szczygłowice.