FARMINGTON — Classes will resume Thursday at Mt. Blue High School,  Principal Monique Poulin said Wednesday afternoon.

Workers were getting the power ready to go , she said at about 3 p.m.

Classes at the high school and Foster Career and Technical Education Center were cancelled Wednesday after a construction crew doing demolition removed a wall that carried the power line to the three-story classroom building, causing a power failure at about 1:30 p.m. Tuesday.

The school and center are in phase one of a three-phase $64 million renovation and expansion at the high school and center, Leanne Condon, director of curriculum assessment and instruction, said.

“Right now we are focused on replacing wiring to get kids back to school,” she said.

A construction worker, who was injured Tuesday in a separate incident when nine of 14 trusses on the former gym roof fell during demolition, was doing OK, Condon said.

“He’s home,” she said.

The worker from Hall Demolition, a subcontractor on the project, was on a scissor lift when a main support beam fell in and knocked the trusses down, she said.

It is believed the trusses knocked the lift over when they fell, David Leavitt, district director of support services, said Tuesday.

The worker received minor injuries, Condon said.

Engineers, architects and insurance company representatives were doing assessments at the school Wednesday trying to determine what went wrong, Condon said.

dperry@sunjournal.com