- Coal merchant wholesalers
- Coke merchant wholesalers
- Concentrates, metallic, merchant wholesalers
- Fuel, coal and coke, merchant wholesalers
- Metal ores merchant wholesalers
- Metallic concentrates merchant wholesalers
- Minerals (except construction materials, petroleum) merchant wholesalers
- Nonmetallic minerals (except precious and semiprecious stones and minerals used in construction, such as sand and gravel)
- Ore concentrates merchant wholesalers
- Ores (e.g., gold, iron, lead, silver, zinc) merchant wholesalers
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