According to its website CAterpillar, since its inception 80 years ago, "has grown to be the largest maker of construction and mining equipment, diesel and natural gas engines, and industrial gas turbines in the world. Our products, services and technologies fall into three principal lines of business: Machinery, Engines and Financial Products. As a global, diverse technology leader, Caterpillar is committed to excellence in all that we do. We are proud of our role as the leader in building the world’s infrastructure, and in enabling progress for millions of people around the globe."  Caterpillar customers operate in fields of industry including infrastructure development, mining, energy, forestry and transportation.
- Caterpillar, About CAT , accessed 13/03/2008