I work in an old building, loading trucks on the only belt with no industrial fans. Instead, we have 3 ceiling fans that don’t do anything because they’re 40 feet above us. The only way we don’t die on shift is when we open up the garage doors to have airflow on our belt. My question is, have any preloaders bought portable/rechargeable fans? Are they any good? I wanna get 3 for the 3 trucks I load.