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.
Bonding with Masonry 2024: Q3

This issue’s questions come from a Mason Contractor, an Architect, and an Engineer.  What questions do you have? Send them to info@masonrymagazine.com, attention Technical Talk.   Q.  A Mason Contractor writes that they have a project to install a concret

About: Featured
How Technology Can Help Increase Efficiency Within Your Masonry Company

Masonry, a craft as old as civilization itself. From the Pyramids of Egypt to the Great Wall of China, we've been stacking bricks with a precision that would make any Lego master jealous. But let's face it, while the techniques might be ancient, the chall

Energy Efficient Shelf Angles in Modern Construction

The conversation around energy efficiency in buildings is multifaceted, requiring a holistic approach to achieve high-performance building envelopes. One often overlooked component in this discussion is the role of shelf angles used in supporting masonry

Masonry in the Media - Highclere Castle, Chatsworth House and More!

Located in Hampshire, England, Highclere Castle has gone through three iterations from its beginnings in the medieval era to today. Ownership of the estate’s land can be traced back to 749 A.D.

About: Featured