It was a noteworthy moment recently as three generations of Brunks were on hand at Oakdale High School to spray fire proofing insulation as part of the old wrestling room conversion. Representing close to five decades of doing business, Brunk Industries founder John Brunk, left, current business owner and son, Jim Brunk, right, and grandson Preston Brunk, center, collaborated to get the job done. The two younger Brunks are alumni of the school, while John spent a fair number of years coaching OHS football.