SHARECOMMENTMORE

SAN FRANCISCO (AP) -- Authorities say raids on metal recyclers in Northern California have turned up AT&T wiring, Amtrak cables and a 6-foot metal ramp stolen from a freeway project.

The San Francisco Chronicle says photos of some items were displayed Wednesday at a news conference in Martinez -- a day after raids on seven recycling yards in Contra Costa County.

Authorities say they found apparently stolen metal at each yard and the owners could face fines or criminal charges.

Authorities say thefts of copper, aluminum and other metals cost taxpayers a fortune.

Some scrap-yard owners say they try to determine if metal offered to them is stolen but that can be difficult.