The Metrodome roof collapse is turning out to be quite the problem. After moving two home games because of the collapsed roof, officials are trying to figure out the extent of the damage and a timeline for its repair.

"They're hoping to know the full extent of the damage and get a real good sense of the timing (for repair)," said Pat Milan, a commission spokesman.

The Vikings finish the season with two road games so they're not in immediate need of the stadium. There were four panels that were originally damaged and engineers used a shotgun this week to blow out a fifth panel that had a load of ice on it. But that's not the end of it.

More recently, engineers have identified an additional three or four panels that are still carrying ice loads and may be "candidates" for replacement. A couple of those panels "have torn slightly but haven't done the whole fall-down routine," Milan said.

They're still melting some of the ice on the roof which is key in making the repair a safe working environment. Once that happens, they can get a more accurate picture of what the repair process will be.

Suffice to say, this is a big project.