If stronger knives were installed, this machine could be used to dig canals for irrigation or drainage. And military trenches could also be dug.Awesome video always love snowplow and blow ers as a small boy to 60 years know !Reverse-seated plowing, now that's a drag. Heavy snowfalls in the 21st century seem to become 'wet-pack' and then frozen again after the initial fall. I've always been curious as to why airports do not use the liquified salt-spray on airport runways.