Three Roman kilns, three Portland kilns, three (Liban) rotary kilns, one Schlegel kiln – the Knoch brothers wasted no time in expanding the Wietersdorf works! The erection of the first three Roman kilns was completed in 1896, followed by three more Portland kilns set up between 1897 and 1900 and, immediately after the turn of the century, three rotary kilns plus one Schlegel kiln which went into operation in 1902.
