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The paper describes a concept for fusion power plants which uses a minimum activity blanket, and MHD for the conversion, to electricity, of the heat deposited in the blanket by neutrons and gamma rays. Two types of blanket design are considered. In the first type, a hot graphite structure is contained in an aluminum shell. In the second type, only graphite plus lithium aluminate for tritium breeding is used. Heat is removed from the blanket at several different temperatures corresponding to the temperature limits of the different materials employed. The blanket is cooled by helium, which also serves as the working fluid in an MHD cycle, or gas turbine closed cycle, or else transfers heat to a boiler, depending upon its temperature. Combined plant efficiencies of from 60 percent to as high as 75 percent appear feasible.