The Caterpillar D10 N bulldozer evolved from tracked - type tractors .
The Caterpillar D10 N bulldozer is characterized by a steel blade attached to the front that is used to push other equipment and construction materials , such as , earth .
The Caterpillar D10 N bulldozer evolved from tracked - type tractors and is characterized by a steel blade attached to the front that is used to push other equipment and construction materials , such as , earth .