- Art Wilson Co.
 - Mining, processing and transporting gypsum for the use by the agriculture and cement industries. Also performs contract mining and transportation services. - CVC Mining Company
- Suppliers and exporters of mica. Products include sheet muscovite mica, mica flakes, mica blocks, mica splittings, quartz and feldspar.
 EGL Puracite
- Specialises in the production and marketing of dried carbon products for water treatment and metallurgical applications.- Export Linkers
- Exports mica products including powder and flakes.
- Formation Capital Corporation
- Integrated cobalt miner and chemical refiner.
- Guizhou Kailin Corp.
- Phosphorous mining and export company.
- Mahavir Minerals
- Mines, processes, and supplies various minerals.
- Mississippi Lime Company
- High calcium lime products.
- Quinto Mining Corporation, The
- Offers information regarding upcoming mining project in Lumby. Products include mica, graphite, silica, and other industrial minerals.
- World Minerals
- International industrial minerals mining, processing, and marketing company specialising in diatomite and perlite products.
- Xinrong Group
- Specialises in producing magnesia, high grade synthetic, and unshaped refractories, as well as magnesia bricks.
- Zemex
- Produces industrial minerals and reprocesses aluminium drosses.
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