Seed cotton from producers in Alabama, Arkansas, Mississippi, Missouri, South Carolina, and Tennessee was ginned in a small-scale gin at the Stoneville, MS, Cotton Ginning Laboratory. Seed cotton from Arizona, California, New Mexico, and Texas was ginned at the Mesilla Park, NM, Cotton Ginning Laboratory. Air was sampled from the exhausts of the unloader separator and the first lint cleaner. Proximate analyses and X-ray fluorescence analyses were performed on the emissions sampled and the dust captured by the cyclone. Traces of about 19 elements were found present in the emissions. Ash content for the Midsouth cottons ranged from about 6 to 26% for the lint cleaner emissions and 22 to 73% for the material collected by the cyclone. Cellulose content for the Midsouth cottons ranged from about 29 to 51% and 8 to 14% respectively, for the lint cleaner emissions and material collected by the cyclone. Ash content for the western cottons ranged from about 16 to 33% for the lint cleaner emissions while the cellulose content ranged from about 13 to 19%. The remaining data for the western cottons has not been completed at this time but will be published in a comprehensive manuscript later.