Bulldozer or "Crawler Tractors"first appeared in 1930's have proven themselves over the decades for earth moving,ground clearacne and demolition,the most popular and well-known brand of machine is Caterpillar(CAT). Bulldozers with their high-powered diesel engines are crawler type tractors.Bulldozers are for far more heavy-duty work than standard tractors typically using heavy-duty tractors instea...

Excavators are heavy construction equipment consisting of a boom, arm, bucket, and cab on a rotating superstructure atop an undercarriage with tracks or wheels. These machines are used mainly for digging purposes as well as various lifting and carrying tasks in various applications. Excavators are heavy construction equipment consisting of a boom, arm, bucket, and cab on a rotating superstructure ...