This section presents several specific examples where the possibility of identifying the need for and an estimate of USU contributions is explored. These examples are all based on situations that incorporate actual nuclear **data** rather than artificial data. However, they sometimes treat isolated and/or truncated **data** sets for reactions that normally would be linked to several other reactions through measured ratios in an actual comprehensive, simultaneous evaluation. By this means, the examples introduced here have been simplified and reduced in scope in such a way as to make discussions of USU more transparent than generally would be the case for actual evaluations. In no instance should the results generated in these examples be interpreted as substituting for the results provided in existing evaluations.