| 1954 | Establishment of company as a mobile sawmill by our father Adolf Erhart |
| 1958 | Acquisition of the present area in Sonntag-Sand and installation of one of the first bandsaw mills in Austria |
| 1976 | Upgrading of the cutting performance by buying a mechanical band-resaw |
| 1978 | Purchasing of the first trimming circular saw for professional manufacturing of blank window scantlings |
| 1980 | Loss of receivables of 10% of sales in the Italian market |
| 1986 | Building of a stacking system, a sorting system and a piling system |
| 1991 | Building of a biomass heating system and dry kilns |
| 1992 | Death of the company’s founder Adolf Erhart and assumption of management by Alfons Schwarzmann |
| 1998 | Assumption of management by the current owners Joachim und Ignaz Erhart |
| 2001 | Building of a barking plant |
| 2003 | Enlargement of drying capacity |
| 2004 | Building of a new storage depot |
| 2005 | Building of a new log band sawing construction |
| 2006 | Enlargement of log space, building of a disposal system, as well as a depot for biomass |
| 2007 | Enlargement of the depot for biomass and extension of vehicle fleet (stacker lift trucks) |
| 2008 | Acquisition of a modern stack cutter |
| 2009 | Modernisation of biomass cauldron, building of a new edging and trimming cut device with a profiler unit and lumber sorting plant, enlargement of space for lumber, bringing a blank drawing system into service |
(Click on pictures to enlarge them)