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Cupples Station, St. Louis, 1894
This story begins with the steam, smoke and thunder of thousands of freight trains arriving and departing, loading and unloading. It starts with armies of cargo handlers bustling amid a 20-building complex of multi-story warehouses.
  Begun in 1894, and at its peak in 1917, Cupples Station, St. Louis, was for decades a leading, national freight depot, a powerful, pulsing artery of mid-continental commerce.
  Was.
  By 1971, 10 of the 20 brick warehouses were history. Some burned. Demolition for Busch Stadium and ramps for interstate highways took others. Trains, workers and money were long gone. Though designated a city landmark, Cupples Station was an empty, obsolete derelict.
  In 1998 a local redevelopment firm and a prominent national bank announced plans to remake the empty husk into a glittering four-block complex of office space and retail.
  They began by creating the luxurious "Westin Hotel at Cupples Station" -- now serving guests -- from four of the aged warehouses.
  Representatives from PROSOCO, and St. Louis-based Western Waterproofing Inc. were among the first on the scene as outside renovation began with a thorough facade cleaning.

Decades of dirt grimed the once bright brick
  Decades of dirt, pollution, bird waste, paint and tar grimed the once bright brick, recalled Bill Hohmeier, St. Louis branch manager for Western Waterproofing.
  The massive exterior restoration effort got under way as interior work was going full steam. Inside, workers converted lofty, musty storage vaults into gleaming luxury hotel rooms. Outside, the swing stages went up.
  The huge variety and quantity of surface contaminants -- compounded over time -- posed multiple challenges for workers. However, the PROSOCO toolkit held the answer for each one.
  Diluted with water, Sure KleanŽ Heavy Duty Restoration Cleaner scoured away years of carbon and atmospheric staining, bird waste, and dirt.
  Sure KleanŽ Heavy Duty Paint Stripper ate up old painted advertisements on the brick. In some cases the gel-consistency paint stripper dwelled for hours as it methodically chewed through multiple layers of old, oil-based paint.

Heavy duty paint stripper dissolved the tar
  It also dissolved stubborn accumulations of sticky tar used to attach makeshift wooden structures to the brick walls.
  Western Waterproofing workers systematically cleaned the buildings from their stages. They worked in dramatic vertical "drops," 26 - 30 feet wide on buildings ranging from four to seven stories.
  "It was remarkable to see the differencebetween clean and dirty," Mr. Hohmeier commented. "The difference was especially remarkable where the crews made their first drops right down the center of the facade."
  Beneath the grit and grime, the rich red masonry was in good shape for all its years of neglect, Mr. Hohmeier commented. A civil engineer by training, he marvels at the workmanship that went into the turn-of-the-century structures.
  "Once the buildings were cleaned, we replaced a few hundred damaged bricks and solid tuckpointed the building," he said. "But overall the buildings came to us pretty much intact."
  Minor mortar smears and other new construction stains from the tuckpointing came off easily with PROSOCO's brick cleaning classic Sure KleanŽ 600 Detergent. "I'm glad we were able to salvage Cupples Station," Mr. Hohmeier said. "It was almost torn down about 10 years ago. Now we have four very nice-looking buildings there."