Donner celebrates 50 years at PROSOCO

Words: Al MorrisPROSOCO’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.
Concealed Lintels, Exposed Craftsmanship: Navigating High-Detail Brickwork
October 2026

In modern architecture, some of the most striking masonry features are the ones where the structural support is completely invisible. Concealed lintels, floating brick soffits, and intricate column projections create clean, continuous sightlines that high

Shayne Sanders
Technical Talks
Read More
Dust Mitigation in Masonry: Practical Strategies for Safer Job Sites
October 2026

Every day, masonry professionals cut block, grind mortar joints, core drill, mix dry materials, and demolish existing structures. These tasks are fundamental to the trade, but they also generate dust. While dust may seem like an unavoidable part of the jo

Greg Brown
Safety Library
Dust Extraction Systems Silica Safety Sponsored
Read More
General Shale Continues as a Gold Partner in 2027
October 2026

The Mason Contractors Association of America (MCAA) is proud to announce that General Shale will continue as a Gold Partner in the 2027 Masonry Alliance Program.

MAP Partner
MAP Partner
Read More
Unique Industries Kem-O-Kleen Remains a Silver Partner in 2027
October 2026

The Mason Contractors Association of America (MCAA) is pleased to announce that Unique Industries Kem-O-Kleen will remain as a Silver Partner in the 2027 Masonry Alliance Program.

MAP Partner
MAP Partner
Read More
Interested in working with us? Learn about and join the Masonry Alliance Program →