Management - United Plate Glass Company architectural glass, united plate glass, upg, butler pa, glass company, glass company pennsylvania, glass company pa, glass company butler pa, commercial glass, residential glass, architectural glass products, glass fabrication, glass company north carolina Joyce Cully. Controller. Joyce Cully has partnered with husband, Mike, for over 30 years to build United Plate Glass into a difference making company, both for the people employed there as well as the community in which it operates.