(By Greg Rourke) – Brian recently showed us the Euclid TC-12 bulldozer. Apparently it was a nightmare as far as reliability. It turns out if you needed an XXL dozer in the early 50’s, you had another choice. Maybe the TC-12’s reputation preceded it, or maybe you just didn’t like green, or just liked Caterpillar. Here we have the Siamese Twin D-8.

Built by Peterson Caterpillar in San Leandro, California the Twin was the answer for those who really needed to move a great deal of whatever was in their way until the D-9 came out in 1955. As the name suggests, it was two D-8’s joined side by each, and a very enormous dozer blade stuck on the front. They had a few different configurations, including a high clearance model for clearing trees. It could knock down 40 foot high trees and shove them 300 feet. The coal model could move 25 yards of coal at a time. The Super Push prototype had a 22 foot wide blade, and was field tested at a dam project in Montana.