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P&H Mining

P&H Mining Equipment sells drilling and material handling machinery under the "P&H" trademark. The firm is an operating subsidiary of Joy Global Inc. In 2017 Joy Global Inc. was acquired by Komatsu Limited of Tokyo, Japan, and is now known as Komatsu Mining Corporation and operates as a subsidiary of Komatsu.

Joy Global Inc. (JGI) is a mining machinery and service support company based in Milwaukee, Wisconsin, USA. It consists of two operating units – P&H Mining Equipment and Joy Mining Machinery. P&H Mining Equipment specializes in the design, manufacture and support of equipment applied to surface mines. Joy Mining Machinery specializes in equipment and support applied to underground mine operations.

Industrial artisans Alonzo Pawling and Henry Harnischfeger started the manufacturing business that would evolve into P&H Mining Equipment in 1884 in Milwaukee, Wisconsin, USA.

Pawling was a castings pattern maker. Harnischfeger was a locksmith machinist with some engineering training. Both individuals served within the Whitehill Sewing Machine Company factory in Milwaukee starting in 1881. Concerned that Whitehill business operations were drifting toward failure, Pawling exited the firm to start a small gear machining and pattern making shop in 1883. Needing more gear machining expertise and capital, Pawling persuaded Harnischfeger to join his firm as an equal partner. Their Pawling & Harnischfeger Machine and Pattern Shop officially began on December 1, 1884.

Pawling and Harnischfeger initially supplied industrial machinery components and assembly service support to large manufacturing operations in Milwaukee. Their customers included industrial knitting machine manufacturers, brick makers, grain drying equipment manufacturers and beer brewers. When an overloaded overhead bridge-type crane collapsed within the foundry operations of a nearby heavy equipment manufacturer known as the Edward P. Allis Manufacturing Company, Pawling and Harnischfeger rebuilt the crane with an improved and simplified design.

Pawling & Harnischfeger soon transformed their business into an industrial cranes manufacturing and service operation. A bank panic in 1893 caused demand for cranes to plummet however, prompting P&H to look for another product line that might help them reduce business risk amid economic downturns. They turned their attention to earth moving machinery, as America was in the midst of an infrastructure and construction boom that required large volumes of such equipment.

By 1920 the P&H digging machinery product line included P&H Model 206 and Model 300 machines that the firm produced in batches of five or more. By 1926, P&H digging machinery was effectively in distribution around the world including Mumbai, India.

Over the ensuing decades, P&H earth moving machines evolved into larger, more powerful and more productive prime movers of material. By 1930, welding technology made possible the fabrication of lighter, stronger machinery versus traditional riveted-design machinery. P&H not only was an early adapter to welded design, but the firm also designed and manufactured its own line of electric arc welding machinery and welding rod products. Another technology advance applied to P&H digging machines during the 1930s was the Ward-Leonard DC electric motor drive system. Pawling & Harnischfeger began designing and making their own electric motors and controls starting in 1893 when they acquired assets of the Gibb Electric Company that were not needed when Gibb was purchased by Westinghouse Electric Manufacturing Company.

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