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It is, therefore, of utmost importance that internatioual exploitation is main- 

 tained and facilitated as much as possible. The situation is not too bad today, but 

 could be better. The foreign groups are of necessity disfavored citizens in a certain 

 sense. They work far away from their home bases, they are up against technical 

 difficulties in a foreign laboratory- where they have to rely on in-house help and 

 support. There has been a reasonable reciprocity in the use of facilities although, 

 in the opinion of some, CERX was not as generous to foreign groups as the U.S. 

 laboratories. But problems do remain and may get more serious when there will be 

 a scarcity of experimental areas, and the construction time of experiments becomes 

 ever longer. This is to be e.xpected with the new giant projects, where installations 

 and instrumentations cost more than several accelerators of the old style. 



Step 4 has not been implemented in the construction of existing facilities but 

 is much discussed and encouraged for some presently planned projects. It will be 

 realized in the case of the German HERA facility where Italy, Canada and Japan 

 have made some proposals of participation. The particiption of a nation in the 

 construction necessarily implies some special rights for their scientists in the use of 

 the facility. Here a problem arises: so far the admission of a team to a facility was 

 supposed to be based solely upon the scientific merit of its proposal, whether they 

 are foreign or not. Obviously, that principle was not always adhered to. National 

 teams had a somewhat better chance. But an explicit right for experimentation on 

 the basis of having contributed to the construction, raises some serious problems. 

 International participation of some form is under discussion today for the con- 

 struction of two large projects: The Supercollider (SSC) developed by the American 



