Consisting of accumulations of dust or dirt and metal articles such as nuts, bolts, screws or washers, having value for salvaging of such articles. Does not apply on floor sweepings containing precious or semiprecious materials shipped for reclamation. For provisions applicable to sweepings containing precious or semiprecious materials, see item 195890, 'Sweepings, Tailings or Refuse, NOI.'. In boxes.