Keith Donner Marks 50 Years at PROSOCO

Words: Dan KamysKeith Donner Marks 50 Years at PROSOCO

PROSOCO’s VP for Operations Keith Donner marked 50 years of employment with PROSOCO in February. Donner studied business and accounting at Kansas City, Kansas, Community College before joining PROSOCO in 1963.  

“I started in the accounting department,” Donner says. “But in those days, everyone did everything, so I also loaded trucks, filled containers and did anything else that needed to be done.”

Donner joined the Army Reserve in 1965, serving a year’s active duty in Vietnam as truck driver with the 842nd Quartermasters. He returned to PROSOCO when his military tour of duty ended. 


Since joining the PROSOCO, Donner has served as purchasing agent and head of accounting. He helped open manufacturing plants and distribution centers in Georgia, New Jersey and Ontario. Donner also helped PROSOCO develop many of its restoration cleaning formulas, including a poultice powder for removing rust stains. Restoration cleaning projects he’s proudest of having been involved with include the Chrysler Building and Grand Central Station.

Donner has served as PROSOCO’s VP of operations since the late-1970s. Semi-retired now, he still works several days a week overseeing real estate and tax issues, and serving as a company mentor and historian.
Getting the Finish Right on Burnished CMU
July 2026

The wall is complete. The lines are crisp. The coursing is tight, and the burnished CMU delivers exactly the refined appearance the design team envisioned. After weeks of coordination and careful installation, the project is final

Argo Community High School Performing Arts Center
July 2026

Argo Community High School is located in Summit, Illinois, just southwest of Chicago’s Midway Airport. In 2016, the Argo Community High School Board of Education and the school’s administration undertook the construction of a new performing

Masonry as the Standard: Delivering Strength, Durability, and Permanence at First Baptist Church of Sutherland Springs
July 2026

The replacement of First Baptist Church of Sutherland Springs serves as a clear example of masonry’s ability to deliver long-term durability, structural integrity, and architectural permanence in worship facility construction. Following the tragic events

Designing Masonry Openings Without Compromising Aesthetics
July 2026

One of masonry's greatest strengths is its ability to create visually striking architecture. From arches and deep reveals to decorative brick detailing, masonry provides texture, depth, and character that continue to inspire architects today. As buildin