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Sidewalk gum (light spot, foreground)---and other unwanted stuff downtown---gets removed by (left to right) Dave Tolliver, with dry-ice blaster, Clark Covey and Ike Maxwell during a demonstration on 1st and Main Wednesday afternoon.

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Dry ice blasting possible solution for downtown clean-up

A demonstration Wednesday showed one possible solution to the gum and grime that mar downtown sidewalks.

WALLA WALLA -- Gum be gone.City and downtown officials got a look at a possible new way to get rid of old chewing gum, grime and other gunk Wednesday.In front of a small group of onlookers gathered at Land Title Plaza, Dave Tolliver of Oxarc demonstrated

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