Yelomine® pipe products featuring the Certa-Lok® restrained joint pipe system and manufactured from a specially formulated PVC compound that contains impact modifiers and UV (Ultraviolet) inhibitors is uniquely designed for the rigorous application environment of the mining industry. These modifiers and inhibitors provide high impact strength over an extended period of time and allow Yelomine to be used in above-ground, exposed applications as well as underground or buried applications.