Gwent Police is appealing for information after a Kakauchi 1.5 tonne mini digger and an Ivor Williams trailer was stolen from a unit on Bowen Industrial Estate, Aberbargoed.
The break-in happened at around 8.30pm on Wednesday June 18.
Officers are keen to trace two men who were seen in the area in a Green Diahatsu Fourtrak 4×4 vehicle.
Anyone with any information about this incident is urged to contact Gwent Police on 101 quoting log 80, 19/06/14.