The Electric Mining Shovel as a Primary Digging Tool for Open-Pit Mining

CIM Bulletin, 1972

W. J. CHERONES, Vice-President and General Manager, Harnischfeger Corporation, Milwaukee, Wisconsin, U.S.A.

This paper describes the history of the development and application of the electric mining shovel in open-pit mining, dea1ing particularly with far-reaching advancements in three primary areas: metallurgy, mechanical design and electrical systems. Hoist drives and crowd drives, including the Magnetorque and Electrotorque systems, and the integral propel drive are given close attention
Keywords: Capacity, Design, dipper, high availability, Metallurgy, open-pit mining, shovel, Hoists, Mining shovels, Motors, Power, shovel, Shovels, Systems