Since 1900 limestone is mined and processed at our Netstal site
Melchior Zopfi opens its lime kiln.
Out-of-production cotton printing factory Kubli in Langengüetli is purchased.
Rail connection to the railway station established. The number of workers rises to 125 until 1918. Zopfi’s grandson, the ETH-studied chemical engineer Konrad Auer-Brunner, joins the company.