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.
The Enduring Aesthetic Power of Brick
March 2026

For centuries, brick has shaped the built environment in ways that few materials can match. From the stately facades of historic campuses to the bold, contemporary forms of modern civic buildings, brick is both a foundation of architectural tradition and

Expert Tips for Brick Installation
March 2026

Clay brick has long been valued for both its durability and aesthetic appeal, but achieving a clean, consistent build that will endure for a lifetime depends just as much on jobsite discipline, install strategy, and preventative moisture management as it

OSHA’s 2025 Top Violations: What the Numbers Reveal for Masonry and Construction
March 2026

Each year, the Occupational Safety and Health Administration (OSHA) publishes its list of the most frequently cited workplace safety standards based on federal inspection data. The purpose is simple: show employers where hazards are consistently being fou

Combining Modern Healthcare with Tribal Design: Nisqually Health & Wellness Center
March 2026

The Nisqually Health & Wellness Center is a project that the wonderful team here at Warfield Masonry completed in 2020. Built on the Nisqually Reservation (near Olympia, Washington), this project incorporates a variety of masonry materials into its tribal