Caterpillar Inc. (Caterpillar) is a manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives. The company principally operates through its three product segments - Resource Industries, Construction Industries, and Power Systems - and also provides financing and related services through its Financial Products segment. The Company�s Construction Industries segment is responsible for supporting customers using machinery in infrastructure and building construction applications. The Resource Industries segment is primarily responsible for supporting customers using machinery in mine and quarry applications. Power Systems segment is primarily responsible for supporting customers using reciprocating engines, turbines and related parts across industries serving electric power, industrial, petroleum and marine applications as well as rail-related businesses.