Original oil and gas trade magazine vintage ad for HUGHES TOOL COMPANY of Houston, TX. Core Bits Successfully Used on This Record Well. Big Lake Deep Production Enhanced by Good Producer in San Angelo, Texas. Pictured is Mr L.L. Runnels, Driller, and crew with the Hughes Core Bit ready to go into the hole. This unique 1931 old oilfield petroleum drilling equipment magazine advertisement would display beautifully matted and framed. Nice graphics.