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  2. Hard hat - Wikipedia

    en.wikipedia.org/wiki/Hard_hat

    In 1919 Bullard patented a "Hard-Boiled hat" made of steamed canvas, glue and black paint. [3] That same year, the U.S. Navy commissioned Bullard to create a shipyard protective cap that began the widespread use of hard hats. Not long after, Bullard developed an internal suspension to provide a more effective hat.

  3. Expiration date - Wikipedia

    en.wikipedia.org/wiki/Expiration_date

    An expiration date or expiry date is a previously determined date after which something should no longer be used, either by operation of law or by exceeding the anticipated shelf life for perishable goods. Expiration dates are applied to some food products and other products like infant car seats where the age of the product may affect its safe ...

  4. Standard diving dress - Wikipedia

    en.wikipedia.org/wiki/Standard_diving_dress

    Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that required more than breath-hold duration, which included marine salvage, civil engineering, pearl shell diving and other commercial diving work, and similar naval diving applications.

  5. First Expired, First Out - Wikipedia

    en.wikipedia.org/wiki/First_expired,_first_out

    These items include perishable products or consumer goods with a specified expiration date. The product with the deadline for the next intake will be the first to be served or removed from stock. FEFO is majorly used in the pharmaceutical and chemical industries where expired dates are calculated based on a batch-expired date or shelf-life time.

  6. Some at-home COVID tests have expiration dates changed ... - AOL

    www.aol.com/home-covid-tests-expiration-dates...

    First, check to see if the expiration date got an extension by the U.S. Food and Drug Administration. If it did, that means the test can still produce accurate results.

  7. Don't listen to expiration dates on food labels - AOL

    www.aol.com/lifestyle/2016-08-22-dont-listen-to...

    Each year, people throw away thousands of dollars worth of food. Most consumers use expiration dates as an indicator of food safety, but they aren't always what they seem.

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