Contamination is the major issue of concern to the ginning, and textile industry. In our study cottons with and without foreign matter were processed into yarn. The cotton was carded but the contamination was not fully firmed by the card as foreign matter often flattened in carding. The contamination tends to fibrillate and behave as coarse fibers. The contaminated cottons fiber always appears to interfere with the drafting process and the ring travelers during yarn formation resulting in increased end breaks, thus lowering the strength of contaminated yarns