The International TD-24 was the world's largest crawler tractor when introduced in 1947. Ray Derr puts his beautifully restored unit through its paces at the 2000 convention of the Historical ...
The crawler dozer is a tracked earthmoving machine with a front-mounted blade. Also called a bulldozer, the largest can approach 900 horsepower and weigh nearly 240,000 pounds. Large dozers often are ...
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