Chamber filter press for the Untervaz gravel works
Kieswerk Untervaz AG, established in 1963, is today one of the major gravel works in the Swiss Canton of Graubünden. In the course of the last decade, the company built up a number of minority and majority participations in other gravel and concrete works as well as in companies related to construction and established, in 1989, the Griston Holding AG to disentangle its participations.
At the Untervaz concrete production facility, a new residual concrete recycling system was put into operation. Because the residual water could not be used for concrete production, the company Bibko was...