The winning of metals such as nickel and copper is achieved by leaching them out of mineral ores by means of a multi-stage chemical process in liquid media containing sulphuric acid and with a high solids content. The medias are heated up to 100° C to increase solubility. The lining system must fulfil very high demands with respect to chemical resistance and have a good anti-abrasion behaviour. REMA TIP TOP offers vulcanised or self-vulcanising rubber lining systems (CHEMOLINE) for process tanks and fittings. They have proven themselves in practice for this purpose for more than two decades. REMA TIP TOP lining systems are predominately used to protect concrete areas in collecting basins.