I. Wood pulp A. Mechanical 1. Groundwood 2. Defibrated 3. Exploded B. Chemical 1. Sulfite 2. Neutral sulfite 3. Sulfate 4. Chemical cellulose (sulfate and sulfite) a. Papermaking alpha pulps b. Chemical conversion pulps 5. Soda 6. Semi-chemical 7. Chemigroundwood 8. Screenings 9. Miscellaneous 11. Cotton fiber or rag pulps III. Reclaimed papers A. Paper stock B. De-inked paper stock C. Paper shavings and cuttings IV. Other fibrous pulps A. Manila hemp B. Jute C. Esparto D. Cereal straw E. Seed flax straw F. Bagasse G. Bamboo H. Reeds I. Leaf fibers J. Kenaf K. Miscellaneous fibers (17 , 72 , 143)