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When fires are --then boiler stacks face their greatest danger Red-lead protects cool stacks against corrosion... and maintains unbroken for reducing evaporation losses in this manner. And, used over an undercoating of Dutch Boy red-lead, it not only cuts your evaporation losses to a minimum, but gives equal weather-protection. film when stacks are hot AT night-over the week-end--whenever fires are il banked, boiler stacks of steel stand at the mercy of corrosion unless properly protected. We shall be pleased to help you solve any question of metal protection. Specialists in our Department of Technical Service have made a study of paint for the oil industry. Their knowledge is thorough. Their assistance is free of charge. Address, our nearest branch. And protection is exceedingly difficult. When the boilers are in operation, the heat of the stack may injure the paint film. The problem is to hold the paint film intact. Many paints fail at extreme boiler-stack temperatures, leaving the steel incompletely protected when the stack becomes cool. Litharge of correct physical character and extreme chem ical purity is a necessity in oil-refining. Such litharge is made by the makers of Dutch Boy red-lead and Dutch Boy white-lead. You can always rely on its unvarying uniformity. Our nearest warehouse can give you quick shipment. Such is not the case with pure red-lead. Up to the maximum stack temperatures for normally operated boilers,red-lead maintains anunbroken protective coating. When you paint boiler-stack steel with pure red-lead, you are giving it the best possible protection. Pure redlead paint resists the corrosive attack of air and moisture. It stands up under the heat of boiler stacks. It produces an elastic film which does not crack when the steel con tracts and expands under alternate cooling and heating. It is not injured by boiler gases. How to cut evaporation loss Oil in light-colored tanks stays ten degrees cooler than oil in dark-colored tanks. This is a known fact--proved by the U. S. Bureau of Mines. NATIONAL L35AD COMPANY New York, III Broadway Boston, 800 Albany St. Buffalo, 116 Oak St. Chicago. 900 West 18th St. Cincinnati, 659 FreemanAve. Cleveland, 820W. SuperiorAve. St. Louis, 722 Chestnut St. San Francisco, 48S California Sr. Pittsburgh, National Lead & Oil Co. of Pa^ 316 Fourth Ave. Philadelphia, John T. Lewis & Bros. Co., 437 Chestnut St. Tanks and tank cars painted in light colors guarantee large yearly saving in oil. Dutch Boy white-lead is ideal DUTCH BOY RED-LEAD This advertisement appears in The Oil and Gas Journal, April 21, 1927 0000-NLI-000017667