Original oil and gas trade magazine vintage ad for SALT WATER CONTROL INC. Main office was located at 1809 Continental National Bank Building, Fort Worth, TX. How much is Efficient Mud De-Sanding worth to you? Comparative tests have shown actual savings of nearly 6000 Dollars per well when Dorrco D-Sanders were used in drilling South Louisiana wells. This unit removes virtually all the sand and much of the finer drilled solids form 600 to 800 gallons of mud per minute. Be safe instead of sorry. This unique 1959 old petroleum oilfield drilling industry equipment magazine advertisement would display beautifully matted and framed.