State police have arrested three men in connection with the theft of more than 17,000 pounds of nickel
http://pittsburgh.cbslocal.com/2011/10/28/3-men-arrested-in-nickel-theft-at-local-steel-plant/
Nickel is not exactly the most expensive thing around but it is a target of so many Weak Force projects it could be the next steaming hot commodity. Not surprised to find it stolen.