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.
Stumps and branches from landscaping work or driftwood from reservoirs used to be burnt on site, however, burning in the field was banned when the Waste Disposal Law was revised in 1992. Transporting this waste to the proper facilities would cost money, and also it was not the ideal solution from an environmental point of view. A solution that could take place near construction sites with effective utilization was desired. In order to meet the demand, Komatsu developed a self-propelled crusher for dealing with lumber and wood scraps.
This machine could crush, make chips, and recycle wood into compost, mulching materials and slope spraying materials while moving around the construction site freely. Reducing the volume of waste saved transportation costs significantly as well.
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.