California Air Resources Board - Statewide Portable Engine Registration Program

Concrete Pumping Dot Com - Concretepumping Dot Com

C.P.M.A. - Concrete Pump Manufacturers Association

Cummins - Cummins Dealer Locator

Lincoln Lube - Lincoln Automatic Greasing Systems

Mining World - Up to the Minute Mining News and company data

Mack Trucks - Mack Trucks Dealer Locator

Perkins - Perkins Worldwide Dealer Locator

S.C.C.A. - Shotcrete Concrete Contractors Association