Outdoor production areas are commonly known as: agricultural fields, commercial forests (timber), and nurseries.
CFR §170.305: Outdoor production means production of an agricultural plant in an outside area that is not enclosed or covered in any way that would obstruct the natural air flow.
Regulatory Guidance
Browse brief guides about protections for workers and handlers, the AEZ, posting, PPE, exemptions, training, respirators, and more, in English and Spanish.