Ginning is the process of separating the cotton lint from the cotton seeds. Cotton seeds can be used for oil production for human nutrition or as fodder for livestock. Usually, ginning is carried out in the countries where the cotton is produced.

There are two types of cotton gins: roller gin and saw gin. Ginning mills emit extremely fine cotton dust and this is harmful to the human respiratory system. Ventilation systems should therefore be installed in ginning mills, and workers should wear dust masks as protection. Ginning mills without proper safety precautions entail serious health risks for workers.