Before 1985, OSHA regulated wood dust under its nuisance dust standard of 15 mg/m3 (29 CFR 1910.1000, Table Z-3). However, in a 1985 enforcement proceeding before the Occupational Safety and Health Review Commission, wood dust was held not to be covered by the nuisance dust standard. It held that the standard only covered inorganic dusts. (12 OSHC 1785). The Agency did not regulate this substan...