OBLIVIOUS OF THE HEIGHT AND DANGERS involved, two men scrub down a section near the top of the Gateway Arch while a third hoses off the soap. Huge scaffolds are being used but workers hopped off while cleaning near the top of the curving structure to give its stainless steel skin its initial scrub-down. A picture-story of Operation Clean-up atop the 630-foot Arch is on Page 108.

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