21 Ground recycled unworked or semi-worked glass, not for building; pellets being ground recycled unworked or semi-worked glass, not for building; chips being ground recycled unworked or semi-worked glass, not for building; cookies being ground recycled unworked or semi-worked glass, not for building; granules being ground recycled unworked or semi-worked glass, not for building; briquettes being ground recycled unworked or semi-worked glass, not for building; recycled unworked or semi-worked glass, not for building; industrial packaging containers of ground recycled glass