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The first magnetic sweeper was invented by W.D. Shields, a Lehigh University trained physicist, during the 1950"s in PIttsburgh, PA. Mr. Shields worked for Dings Magnetic Corporation during the 1950's developing magnetic relay switches and running the sales organization. Mr. Shields left Dings and subsequently founded the Shields Magnetics Company in the early 1960's at which time he designed and created the first magnetic sweeper. The original magnetic sweepers were designed by Shields and sold to the major U.S. trucking companies for use in eliminating damaging metal trash from loading docks, terminals and ramp areas. Over the next decade as popularity for the sweepers grew, so did the marketplace. Magnetic Sweepers became popular in various industries such as aviation, distribution, material handling and construction. During his lifetime, Mr. Shields registered many patents and held design patents on many variations of the magnetic sweeper. Mr. Shields passed away in the 1990's however Shields Magnetic Corporation remains the largest manufacturer and distributor of magnetic sweepers in the world
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