A beryllium worker is a current worker who is regularly employed in an activity that can expose him or her to airborne beryllium. (Although not defined in 10 CFR 850, the term "regular" is defined in this document to mean "customary, usual, or normal." The intent of the definition is to include individuals assigned to work with beryllium or in beryllium work areas, not individuals who are present in a beryllium work area transiently or who work with beryllium irregularly or intermittently.) Although no exposure threshold is specified in 10 CFR 850, examples of situations that would classify someone as a beryllium worker include the following:
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