waste disposal services 341 wastes 124 recycling of wastes 99 house-hold wastes 41 waste incinerators 41 environment protection 38 composts 29 more ... biological wastes 25 sorting 25 storage of wastes 20 radioactive waste 18 legal regulations 17 synthetic polymers 17 provisions 15 unconventional energy sources 14 industrial wastes 13 health harmful substances 12 biofuels 11 nuclear safety 11 logistics 10 secondary raw materials 9 dumps 9 combustion 9 laws 9 nuclear power station decommissioning 8 municipalities 8 civil engineering 8 scrap-metal 7 systems 7 environmental pollution 7 less ...