The College Station Fire Department says three workers are in critical condition. The barn frame collapsed shortly before 11 a.m. Saturday. Twisted metal beams could be seen at the site, where ground was broken last fall.
All four were transported to a hospital. Their names weren’t immediately released.
Texas A&M spokesman Lane Stephenson says the center is about a mile from the College Station campus.
Authorities are trying to determine what caused the collapse. University police did not immediately return calls.