2504.90 Natural graphite, nes 2504.90.00 D 2504.90.00 D 2504.90.99 A

2505.10 Silica sands and quartz sands 2505.10.00 D 2505.10.10 D 2505.10.01 B

2505.10.50 D

2505.90 Natural sands nes, exc metal bearing sand of Chapter 26 2505.90.00 D 2505.90.00 D 2505.90.01 C

2505.90.99 C

2506.10 Quartz (other than natural sands) 2506.10.00 D 2506.10.00 D 2506.10.01 A

2506.21 Quartzite, crude or roughly trimmed 2506.21.00 D 2506.21.00 D 2506.21.01 A