SAM-940 Detector Readings at Surface of Polished and Unpolished Sides of Granite Samples
| Sample 1 | Sample 2 | Sample 3 | Sample 4 | ||||
| Polished | Unpolished | Polished | Unpolished | Polished | Unpolished | Polished | Unpolished |
| 228.5 cps | 228.9 cps | 284.7 cps | 287.9 cps | Background | 246.3 cps | Background | Background |
Five-minute background = 172.5 cps.