Original oil and gas trade magazine vintage ad for MAGNET COVE BARIUM CORPORATION. Main office was located in Houston, TX. Magcobar Lower Mud Costs. Give all your business to the mud company with the proved ability to lower mud costs, well after well! Superior products, engineering, research. Consistently hit the target of lower drilling costs. This unique 1962 old oilfield petroleum drilling industry magazine advertisement would display beautifully matted and framed. Nice graphics. Two page gatefold advertisement.