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Window cleaner. Window cleaning, or window washing, is the exterior cleaning of architectural glass used for structural, lighting, or decorative purposes. It can be done manually, using a variety of tools for cleaning and access. Technology is also employed and increasingly, automation. Commercial work is contracted variously from in-person ...
List of tallest buildings in Portland, Oregon
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List of tallest buildings in Milwaukee
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List of tallest buildings in Los Angeles
List of tallest buildings in Seattle