The offshore tin exploitation will be challenging the deeper deposits and probably requires new and improved mining technologies. Exploration techniques for deeper deposits have to be profound. In the discovery of new TIN reserves such as Pasir Padi Block, Bangka, Meranti or the coast of West Kalimantan. These deposits having the same characteristics. The transgression and regression glacial periods, the trapment areas of such deposits might be located further and deeper from the primary sources.