How Do You Restore a Pollock Painting?

How do you restore a drip painting by Jackson Pollock is a bit like that riddle "How do porcupines have sex"? The answer: very carefully indeed. Pollock's painting technique certainly don't make life easy for art conservators. Read about how director of the Williamstown (Mass.) Art Conservation Center, Tom Branchick, approaches the restoration a Pollock painting....