NON-METALLIC BUILDING MATERIALS, NAMELY, BITUMINOUS GEOMEMBRANES, REINFORCED BITUMINOUS GEOMEMBRANES, OXIDIZED BITUMINOUS GEOMEMBRANES, ELASTOMERIC BITUMINOUS GEOMEMBRANES AND POLYMER MODIFIED BITUMINOUS GEOMEMBRANES USED FOR WATERPROOFING CIVIL ENGINEERING STRUCTURES SUCH AS DAMS, PONDS, CANALS, DITCHES, DIKES, CHANNELS, LAKES AND HARBOURS; AND FOR ENVIRONMENTAL ENGINEERING SUCH AS INDUSTRIAL WASTE STORAGE OF LIQUIDS AND SOLIDS, RADIOACTIVE WASTE STORAGE CAPPING, POTASH TIP CAPPING, COMPOSTI...