In 24 months, a significant economic asset for Southwest Virginia will be the site of a grand opening ceremony. But on Wednesday the groundbreaking bash for an asset yet to be built was plenty of reason for grins and congratulations for all concerned. Dignitaries — particularly Southwest Virginia’s legislative delegation — gathered at the University of Virginia’s College at Wise to hail the official start of construction of the college’s Convocation Center, a facility to be unmatched in the region for indoor athletic events, concerts and conventions.