Archived - Standard Industrial Classification - Establishments (SIC-E) 1980

• E - Manufacturing Industries
• 35 - Non-Metallic Mineral Products Industries
• 351 - Clay Products Industries

3511 - Clay Products Industry (From Domestic Clay)

Establishments primarily engaged in manufacturing structural clay products (except refractories). Establishments primarily engaged in a clay pit operation are included here. Establishments pri-marily engaged in producing clay refractories are classified in 3591 - Refractories Industry.