Soldier at the University of Pittsburgh is shown grinding valves as part of mechanical operations training in the program during World War One. The engineman must be proficient in over 200 similar operations. This photograph was taken on April 27, 1919.

---

Size: 8537px × 5808px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ...., 4-27-19, 59026, activities, american, au, description, education, engine, equipment, grinding, historical, images, issued, machine, machinery, maintenance, mechanic, mechanical, military, number, operation, operations, pa, parts, photographer, photographs, pittsburgh, process, program, recollection, repair, skills, soldiers, techniques, technology, tools, training, university, valve, valves, war, wartime, world