Some ruins are just more depressing than others and this former board factory is really a tough one. Concrete structures where water has leaked in for years tend to deteriorate in a kind of brutal fashion.
Board materials made of wooden fibers became popular in the 1930s, where the new ideals favored flat surfaces. Suddenly, several square meters of walls, ceilings and floors could be mounted at once and undoubtedly, this was very labor saving. As the post WWII era created a boom in the construction sector, this factory must have seen a period of twenty sustained years of excellent business. Like so many other factories in this business, the slump in the construction sector during the 1970s together with competition, rapidly increasing wages and energy prices made life unbearable and the period from 1980 and onwards was often a long period of torture until the inevitable happened.
UPDATE: Demolition of the factory was been scheduled for 2009. I've heard that the entire site is now gone, but have not seen it for myself