ABSTRACT

Tin (Sn) is a silver metal that occurs in the earth's crust, mainly as cassiterite or tinstone, and is the main source of commercial tin production. Since the collapse of the global tin market, tin mining has left unproductive and sometimes hazardous ex-tin mines. Natural attenuation has largely reduced the health risk associated with potential pollutants from tin tailings. This chapter presents a few case studies that illustrates human intervention can accelerate this process for specific land use. The tin mining industry has contributed enormously to the development of Malaysia as a nation. The rehabilitation program for ex-tin mines depends on the intended land use as well as the physicochemical characteristics of the tin tailings. Although most of the rehabilitation practices for ex-tin mines in Malaysia have focused on agricultural uses, there is an increasing trend in redeveloping ex-tin mines for commercial and housing purposes.