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February 11, 2016

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An engineering student at Westtown High School shows eight-year-old Steele Songle the various parts and how to wear the artificial hand designed for him, April 18, 2014, in West Chester, Pa.

Ron Tarver / Philadelphia Inquirer/MCT

An engineering student at Westtown High School shows eight-year-old Steele Songle the various parts and how to wear the artificial hand designed for him, April 18, 2014, in West Chester, Pa.