From Code sheets for Burial ground memorial form © Harold Mytum Published by Council for British Archaeology
| 10 Slate |
| 13 Purple slate |
| 20 Marble (usually white but often discoloured) |
| 30 Granite |
| 31 Pink granite |
| 32 Grey granite |
| 33 Black granite |
| 40 Sandstone |
| 41 Yellow sandstone |
| 42 Red sandstone |
| 50 Ceramic |
| 51 Brick |
| 52 Tile |
| 53 Terracotta |
| 54 Black-glazed ceramic |
| 55 Brown-glazed ceramic |
| 56 Cream-glazed ceramic |
| 60 Iron |
| 65 Brass |
| 70 Conglomerate |
| 75 Concrete |
| 78 Mosaic (any materials) |
| 79 Glass |
| 80 Limestone |
| 81 White limestone |
| 82 Grey limestone |
| 90 Other |
| 95 Wood |