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1“... danger, red dangerous and therefore prohibited to constructors, and blue zones, doubtful. Blue zoning...”
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Article in Journal/Newspaper -
2“... buildings in the blue (moderate hazard) zone. Ketchum allows single–family dwellings in red or blue zones...”
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Article in Journal/Newspaper -
3by MacLean, Peter John“... polished sections. White-blue zones are enriched in arsenic, brown-yellow zones contain negligible amounts...”
Published 1991
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