Key Players
- The Vanguard Group
- AGSCO Corp
- Bathgate Silica Sand Limited
- CDE Global
- Covia Holdings LLC
- Emerge Glass
- Euroquarz GmbH
- FINETON Industrial Minerals Ltd
- Iota Quartz (Unimin Corporation)
- Kaolin AD
- Mitsubishi Corporation
- Qsand SA Group
- Quartz Werke GmbH
- SCR-Sibelco Hellas
- Sibelco
- Tarmac Central Ltd
- Terengganu Silica Consortium
