Startup of a 1929 Caterpillar Sixty Bulldozer and the Cat 60 pushing a little dirt. The Caterpillar Sixty is a 60 hp crawler tractor, powered by a fourcylinder engine and was the largest tractor in Caterpillar's product line when manufactured from 1925 until 1931. Initially, the Cat Sixty was used to pull farm equipment and road scrapers. Later, cable lift blades were rigged up, so that the crawlers could also be used as a bulldozer.

This video footage was taken at the "Weiach Historik 2022" an event held in the Swiss quarry of Weiacher Kies AG May 28/29 2022 dedicated to showcasing historic, vintage and heavy old construction machinery and equipment of past times.

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