Caterpillar Co., Ltd. (caterpillar, cat) is the world's largest manufacturer of construction machinery. Founded in 1925, it is headquartered in Peoria, Illinois. Cat is a company listed on the New York Stock Exchange and one of the Dow Jones Industrial Average companies. Caterpillar's products include construction, mining, agricultural engineering machinery, engineering vehicles and a variety of engines. In the 2013 Fortune 500 ranking, caterpillar ranked 136th.
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