Sample #109 exhibited deeper Co penetration resulting in a deeper blue penetration of the sample (Figure 36). The distribution of Co showed clearly in the graph (Figure 37) indicating that a longer diffusion period may have been applied. The Co concentration detected was about 466 ppma at the rim and 9 ppma at the center. Fe content was found to be up to 1070 ppma at the rim. The correlation of Co, Fe, Mn, Zn and Ga are presented in Figure 37. In sample #109 the Ga concentrations analyzed across the cross-sections appeared to be the inverse of those analyses in sample 108 in terms of their pattern. These data are yet to be fully understood, however Mr. Thamrong disclosed that the samples in this study were treated at different times and under different conditions.