The real problem is it's changed over the years. As the tellers stopped handling so much money and change, they've moved more toward receiving and tendering checks. While there are still a decent number of cash deposits and the occasional need for specific bill withdrawals, over time it will dwindle from cotton paper dust to more wood pulp and microplastic-based dust. Also it matters a lot where your bank dust has been collectioned, the dust from the air handling system filters contains more fine particulate and urea from duct-based robbery attempts, where as the dust collected from the mob stations are more of wax-based dust.

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