Incidence of Dust and Silica in Spinning Preparation Waste of Selected Cottons

A set of spinning waste samples was separated into lint, trash, and dust using an MTM (Microdust and Trash Monitor). The waste classified into these categories was analyzed for silica content. The waste samples come from 12 commercial bales from various locations (TX and CA) and from 3 major spinning preparation steps: coarse opening, fine opening, and carding. The results were used to test for differences among locations and processing stages in the presence and in amount of silica.