DRYDEN, Ontario (From news reports) -- The operator of the kraft pulp mill in Dryden has installed a temporary protection system in the chemical plant where a section of roof panel collapsed on Friday morning.

No one was injured, and there were no environmental impacts, but the incident forced the temporary shutdown of operations in that part of the mill complex according to officials.

"Our members are safe. No one was hurt. No one was in the area when it happened," said a spokesperson for Unifor, the union that represents most workers at the mill.

In a statement to Newswatch, Dryden Fibre Canada said the Ministry of Labour sent an inspector to the scene, and engineers were called in to assess the building.

When it was deemed safe for workers to enter the site, a protection system was set up to enable production to resume on Saturday.

"The investigation is ongoing, and permanent repair plans are being developed," the company stated.

The Ontario labour ministry said it has issued two "orders" and one "requirement" to First Quality Enterprises, the owner of the mill, but provided no details on the grounds that its investigation is still underway.