The Never-Ending Job: Cleaning the Burj Khalifa
Keeping the Burj Khalifa, the world's tallest building, clean is a never-ending job. The task involves meticulously cleaning over 24,000 windows, four times a…
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Keeping the Burj Khalifa, the world's tallest building, clean is a never-ending job. The task involves meticulously cleaning over 24,000 windows, four times a…