Metal detection technology key to answering why fair ride broke

Inside the Edison Weld Institute on the campus of Ohio State, Senior engineer Roger Spencer holds what looks like a clear computer mouse over a solid piece of steel.The Ultra Sound machine, similar to what is used in a hospital can see what the human eye can't. It's what investigators are likely to use to figure out why the Fire Ball ride at the Ohio State Fair snapped killing one person and injuring seven others.Spencer says the machines like this will answer the question why the metal arm of t