Morey P R, Wakelyn J P
Am Ind Hyg Assoc J. 1976 Jul;37(7):413-7. doi: 10.1080/0002889768507484.
First cut linters and willowed picker, used in cotton garnetting, were examined for content of cotton bract an other plant trash. Bract was found to be a minimal contaminant of the trash of first cut linters. A significant amount of bract (about 9% of the trash) was present in willowed picker. Cotton seed hulls, a valuable oil mill by product, contained an insignificant amount of bract trash.