Aim-listed diamond producer BlueRock Diamonds reports that waste stripping increased in December as mining activities at its Kareevlei diamond mine, in Kimberley, South Africa, returned to normal after the focus was shifted to ore from the KV2 resource to feed the plant to determine the realistic plant capacity.

As such, the strip ratio increased to 2.78 in December, bringing it to 3.49 for the year.