# Standard Interpretations
1 - 1928.21 - Small farming operations and exemption from OSHA enforcement activity under CPL 02-00-051.
2 - 1928.21 - Standards that apply to cotton gins.
3 - 1928.21 - Process Safety Management of Highly Hazardous Chemicals and process hazard analyses.
4 - 1928.21 - Guarding of Farm Field Equipment, Farmstead Equipment, and Cotton Gins.