Sand from Devon, England, UK
UK | |
| SCR Sibelco |
| SCR Sibelco |
| Imerys |
| southampton.ac.uk (n.d.) http://southampton.ac.uk/~imw/Torquay.htm?fbclid=IwAR09kGlfwrCDT855y-DRd36uHahVEe9LW2f2RHySR4C5wCyaj2Via4XqQf4 |
| SCR Sibelco |
UK | |
| SCR Sibelco |
| SCR Sibelco |
| Imerys |
| southampton.ac.uk (n.d.) http://southampton.ac.uk/~imw/Torquay.htm?fbclid=IwAR09kGlfwrCDT855y-DRd36uHahVEe9LW2f2RHySR4C5wCyaj2Via4XqQf4 |
| SCR Sibelco |