This brings to 6.300 the total number of onthejob training slots for Mexican Americans approved under the Manpower Development and Training Act. These programs are designed to serve the unemployed former farmhand or the residents of Spanishspeaking ghettos with no job skills and often with little command of English. Most of the programs are coupled with prejob classroom instruction. Among the new programs are: One in Texas for 750 unemployed migrant farmworkers from the Rio Grande Valley. These trainees will be job oriented in their hometowns of Harlengen. McAllen. and Rio Grande City. then relocated with their families and household goods to the Dallas area for onthejob training at LIAngTemeoVought Aerospace Corp.