Text For Citation: 01 Item/Group: 002B Hazard:

29 CFR 1910.1000(a)(2): An employee's exposure to any substance in Table Z-1, the exposure limit of which is not preceded by a "C", shall not exceed the 8-hour Time Weighted Average given for that substance any 8-hour work shift of a 40-hour work week. a) On or about July 25, 2023, at the workplace located at 5843 Tower Drive, Florence, Wisconsin; an employee was exposed to airborne iron dust that exceeded the permissible exposure limit (PEL) while performing routine Saw Filer duties that included sharpening bandsaw blades. The employee was exposed to an 8-hour time-weighted average (TWA) of 34.9 milligrams per cubic meter of iron dust, approximately 2.32 times the permissible exposure limit (PEL) of 15 milligrams per cubic meter for the total dust fraction of particulate not otherwise regulated (PNOR) listed in Table Z-1. Zero exposure assumed for the unsampled period of 51 minutes. Inhalation hazards associated with elevated exposures to iron dust include increased risk for pneumoconiosis.