Three workmen were hospitalised after a gas pipe was cut at Massey University in Palmerston North today.
Emergency services were called to the site in Fitzherbert about 9.25am, said Fire Service spokesman Mike Wanoa.
Wanoa said a digger cut the gas line, which caused a small leak.
"We were called to secure the area and evacuated the adjacent Massey University Ferguson Hall.
"Three people, all workmen, were transported to the hospital as a result of feeling dizzy."