For the first time in the 49-year-history of the Gateway Arch, a man rappelled down the monument, taking samples from the western face. The samples will determine the best way to clean the Arch. For ...
Workers sit atop the Gateway Arch, preparing to begin taking stain samples from the surface of the Gateway Arch on Monday, Oct. 20, 2014. The work was called off for the day due to excessive heat on ...
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