If the power of prison guards has been altered and reduced by recent social, legal, and bureaucratic instructions in American prisons, as has been reported by many observers, then what is the base of power by which guards currently exert control over prisoners? Following a discussion of the bases of power in prison, data from a survey of guards in five prisons are examined to determine the extent to which each power base is viewed as a resource to gain prisoner compliance. The results are discussed in terms of the guards’exercise of control within the increasingly bureaucratic structure of coercive organization