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The mysteries of 'topping off': Why workers erect trees and crack open a beer when they finish a building - Country Life
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The mysteries of 'topping off': Why workers erect trees and crack open a beer when they finish a building - Country Life
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Topping out' ceremony held to mark key milestone in Pears Building construction | Institute of Immunity and Transplantation - UCL – University College London
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Cleveland Clinic London Celebrates Important Milestone with 'Topping Out' Ceremony – Cleveland Clinic Newsroom
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