STOCK WATCH

TUNGSTEN miner Premier African Minerals slid after it announced the results of a consultation on how to bring one of its Zimbabwean mines back into production.

The study concluded it was viable, but would cost £818,000. After 15 months, it would only be making £ 474,000. In a separate announcement, it said it may have to reconfigure the layout of the mine to take advantage of where minerals were detected. Shares fell 17.5pc, or 0.03p, to 0.13p.