108 



There are four cases, however, where published figures rather 

 than estimates, are given In this appendix. These are three of the 

 four major tokamak. facilities In the world: the Tokamak Fusion Test 

 Reactor at Princeton (U.S.), the Joint European Torus (European Com- 

 munity), and JT-60 (Japan); and the major mirror facility, the Mirror 

 Fusion Test Faclllty-B at Llvermore (U.S.). In these cases, the 

 Department of Energy reported the actual or planned costs. For the 

 foreign facilities, however, there may be some expenses which have 

 not been reported, but these are not more than ten percent of the 

 total. 



The ability to provide cost estimates for foreign magnetic-con- 

 finement fusion facilities also varies from program to program and by 

 facility. The more significant factor, however, is that funding infor- 

 mation for foreign facilities Is not generally comparable to U.S. cost 

 estimates because foreign estimates generally include only the cost of 

 construction materials but not the cost of construction manpower. 

 Estimates of U.S. construction costs include both. 



The information in this appendix on magnetic-confinement and 

 initial-confinement fusion facilities was supplied by the Department 

 of Energy in April and May 1985. 



