Caterpillar 583 D&RGW, Denver&Rio Grande Western Railroad pipe laying dozer w/attachment on blade, lift capacity 24.6 tons, Base pipelayer Cat 583H, witch boom 4.9/6.6 m, operating weight 25 tons, maximum speed 10 km/h.
Engine: Cat D342/342T 235/270 HP
Manufactured in the USA in 1960s.