About 60 percent of the production of sulfuric acid is used to make phosphoric acid as part of the production process in making phosphate fertilizers and detergents. The steel industry is another user requiring large quantities. The acid is used for the removal of oxidation, rust and scale from steel sheets and billets as the final step in the steel making process. Other uses include nitrogen fertilizers and the “acid” in car batteries. One source of sulfuric acid is copper smelting. Most copper ores, especially those in North America are sulfate ores containing large amounts of sulfur. The smelting process releases sulfur dioxide gas, which is captured and turned into sulfuric acid. Strings of three to nine acid tank cars are common in trains.

MODEL FEATURES:

• Type F “double shelf” McHenry couplers (First time in N Scale), body-mounted

• Rubber trainline hoses

• Full underbody details: brake and train line piping

• Two different body “phases” (early and late)

• Different brake systems as appropriate per prototype

• Weighted to meet NMRA RP-20.1 recommended practices

• Machined metal wheels with RP25 contours operate on Code 40, 55, and 80 track

• Separately applied metal grab irons and handrails

• Coupler cut levers

• Etched stainless steel crossover platforms and top platforms

• Different top platforms as appropriate per prototype

• Different end sills as appropriate per prototype

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