Original oil and gas trade magazine vintage ad for MAGNET COVE BARIUM CORPORATION of Houston, TX. Magcobar shoot for lower mud costs and mean it. Select your drilling mud supplier on merit. You will drill the fastest, safest well, from grass roots to TD. Use the golden rule to select your one supplier. Products, Engineering, and Research. Division of Dresser Industries, Inc. This unique 1962 old multi-page oilfield petroleum drilling industry magazine advertisement would display beautifully matted and framed. Nice graphics. Four page gatefold advertisement.