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Welding, protection, and brain damage Dr. Josephs does not advocate against welding; rather, he encourages prudent safeguards. "Protection is the key ingredient here," he says. Read more »
Filters: how long do they last?This question is, unfortunately, tantamount to asking “how long is a piece of string?”. But if specific factors such as workplace conditions are taken into account, an appropriate and safer filter change schedule can be achieved.Read more »