| 162 / | HD | PAPER MAKING AND FIBER LIBERATION |
| 1 | DF | PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL {33} |
| 29 | DF | .~ With regeneration, reclamation, reuse, recycling or destruction of digestion fluid {3} |
| 41 | DF | .~.~ Recirculation (includes separation from fibers) {2} |
| 46 | | .~.~.~ Steam only |