British Transport Police are appealing for help to catch thieves who stole fourteen thousand pounds worth of cabling from tracks in the Rhymney Valley.
They say recent legislation, which makes it illegal for scrap metal dealers to give cash, is going some way to reducing the problem. But as Hannah Thomas reports, they've still got a big fight on the hands to stop it altogether.
More top news
Wales's vote to leave the European Union should not damage Cardiff's reputation as a 'inclusive' city, say council officials.
The two men who ran Wales Stronger in Europe have revealed where they think the campaign went wrong -and call for Jeremy Corbyn to resign.