The modern mask
- At first, the masks wrapped around your entire head to clean the air supply.
- Similar masks, loaded with fiberglass filter, began to be used in the mining industry to prevent black lung. It could be washed and reused.
- Although it saved lives, it was burdensome, and the dangers of inhaling asbestos became known.
- In the 1970s, the first single-use "dust" respirator was created.
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