While equipment built to accommodate urban environments, by generating less noise, vibrations and emission, became more common, super sized equipment that could withstand harsh working conditions in places like giant mines were also developed.
After BZ40, Komatsu developed yet another better version, BZ200.
Its productivity was almost equal to what had previously been done at a plant. Equipped with a soil cutter, it could cut and mix clay lumps that were difficult to do at a plant as well as perform a large-scale ground reformation.
There were other construction machines built by Komatsu over the years. We can see how the various designs mirrored different eras if we look at them set against the flow of history.