N.Mex., is sponsoring a number of events, beginning next week, to mark the 50th anniversary of the Manhattan Project and the opening of the lab. A series of seminars and panel discussions on the scientific and policy implications of the lab's work is slated for April 12-16, featuring speakers such as former laboratory directors Harold Agnew (1970-80) and Don Kerr (1980- 85); Sens. Jeff Bingaman (D-N.Mex.) and Pete Domenici (R-N.Mex.); and Frank von Hippel, editor of the Bulletin of Atomic Scientists. On June 7-10, more than 900 people who worked on the Manhattan Project have been invited to Los Alamos to view an exhibit of project memorabilia, tour the project site, and dance to big-band music. On June 11-12, Los Alamos County will sponsor a "Bridge to the Future" festival, highlighting the Hispanic and Pueblo cultures of the region.