Readers of National Driller will instantly recognize the name Bob Oliver. To us, he’s one of a handful of regular writers for our Drilling Fluids column. But in the Northwest United States, he’s been the go-to man for sales and support for drilling fluids, additives, polymers and foams for CETCO Drilling Products. Oliver retired last month after 48 years of service in the name of bentonite, first with American Colloid Company and later with CETCO. We got him on the phone to see what parting thoughts he might have for our readers.