Table 2: Average concentrations of mercury (mg/kg) in nail samples of miner at the different sampling sites.
| Miners in area | Average concentration of mercury in mg/kg |
| W.Bushara | 7.18 |
| Fuwail | 6.78 |
| Shawor | 7.02 |
| Braisi | 4.40 |
| Gilaitah | 4.39 |
| Khiari | 7.26 |
| Subagh | 6.95 |
| Wadi-Al Rawyan | 2.53 |
| Um Sarha | 3.82 |
| Ed-AL Wahash | 3.55 |