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
All primary and secondary schools in Wales have been categorised in a new colour-coded system. Is your school green or red?
A yellow warning for snow and ice on Thursday night and Friday has been issued.
Some wintry showers and staying windy with a significant wind chill and widespread frost developing