1962
Founding of Dorfer & Co – crushed brick production and recycling in Himberg.
1973
Conversion, construction of a concrete mixing and dispensing plant built.
1993
Site expansion: new construction waste recycling plant for building waste.
1997
Himberg site expanded to add a storage compound for demolition waste, concrete and asphalt demolition rubble and recycled materials.
1999
Dorfer & Co taken over by Böhm Transport Gesellschaft mbH.
2003
Conversion and enlargement of the stationary recycling plant for demolition waste.
2007
Böhm Transport Gesellschaft mbH taken over by Prajo-Böhm Recycling GmbH.
Complete renovation and expansion of the existing plant.
2013
Prajo-Böhm Recycling GmbH acquired by PORR Umwelttechnik GmbH.
Site modernised and developed.
2015
PRAJO & Co GmbH acquires the Vienna site in Seybelgasse.
2018
Prajo-Böhm Recycling GmbH renamed to RCH Recycling Center Himberg GmbH.
2019
Stationary recycling plant converted to bring it up to the current state of the art.
2021
Opening of a treatment plant for synthetic mineral fibres
2023
Construction of a concrete mixing plant at the Himberg site and construction of a processing plant for bottom ashes.