Excerpts from the report: No new item of equipment has been adopted as readily by ginners as the lint cleaner. Only 28 gins operated lint cleaners during the 1948-49 season, but in 1950-51, the number had increased to about 500. By 1954-55, approximately 2,275 gins, or about 32 percent of the total, were so equipped. During this same period, there was a rapid increase in the proportion of the upland cotton crop harvested by machine pickers, from 1.5 percent in 1948-49 to 15.9 percent in 1954-55. Lint cleaning equipment for gins was developed to supplement seed cotton cleaning equipment by removing additional leaf and other trash particles, especially those characteristic of machine-picked cotton. As the demand for this service increased, several types and designs of lint cleaners became available. This study was undertaken to determine the effects of the lint cleaning of machine-picked cotton upon grade, bale value, and returns to farmers in a selected cotton-growing area containing a concentration of lint cleaners along with large-scale employment of spindle-type machine pickers in harvesting the crop.