Data attribution.
The calculator’s compiled data is published by Audiometrics Canada under CC BY 4.0. This embedded edition removes internal editorial reminders; numerical calculator inputs and calculation rules are unchanged.
Occupational exposure references identify NIOSH Health Hazard Evaluation data, NIOSH Publication 98-126, WorkSafeBC publications, and MSHA guidance. Product ratings are drawn from manufacturer publications. Original source names, URLs, and record notes are retained in the datasets; see the calculator guide for context.
These are screening references. A published occupational average is not a measurement of a particular workplace. No source endorsement is implied.