ContractorThe Caterpillar 933 TraxcavatorContrafed PUblishingMarch 2, 2016September 24, 2024 by Contrafed PUblishingMarch 2, 2016September 24, 2024 Following the acquisition of the Trackson Corporation by Caterpillar in 1951, Caterpillar continued to use Trackson’s loader attachments fitted to D2, D4, D6 and D7...