Interest has grown in the past few years in controlling the amount of moisture added to lint in a cotton gin after it has been ginned. Accurate and reliable measurement is necessary in order to control a process. Several experimental installations were made in three gins and operated during the 2000-ginning season that measured the moisture content (mc) of fiber after moisture addition. Four methods of measuring mc were examined. Resistance-type moisture measurements were made at the lint charger, tramper, and bale pusher near the bale press. Bale weight and force measurements were made during bale compression.