| Geometry | Strength | Support | Method |
| P. Tabular & Moderately Steep | L. | X. Unsupported | 1. Cut and Fill |
| Q. Tabular & Flat | M. Moderate | Y. Artificially Supported | 2. Block Caving |
| R. Massive and Steep | N. Weak | Z. -supported | 3. Room and Pillar |
| Feature in mine plan | Symbol | ||
| P | shaft | 1 | ![]() |
| Q | staple shaft | 2 | ![]() |
| R | Abandoned shaft | 3 | ![]() |
| S | Abandoned staple shaft | 4 | ![]() |
