E. F. Johnson Company Employee. Electro-Plating Room. 7 1/2" x 9 1/2" black and white photograph of an unidentified employee of the E. F. Johnson Co., shown working in the electro-plating room; worker is wearing heavy rubber apron and gloves holding up rack with several coils ready for dipping in the large tank; photographed by Huneke Studio, Waseca, Minn.; photograph printed in company brochure; "By having most manufacturing processes done under one roof, the company keeps a close control of quality. This view of the plating department shows a technician inspecting copper plating on a group of inductors. In other similar vats we are able to plate cadmium, nickel, silver and gold, as well as etching, anodizing and iriditing."
