Premier African Minerals Ltd. on Dec. 19 said it restructured the previously signed off-take agreement with Noble Group Ltd. unit Noble Resources International Pte. Ltd.

Under the amended terms, Premier will supply the first 4,100 tonnes of wolframite concentrate from the RHA tungsten property in Zimbabwe over an anticipated two-year period. The original agreement called for the supply of 500 tonnes of concentrate over an initial six-month period.

Pricing for concentrates will be based on a discount to the price published by Metal Bulletin for European ammonium para-tungstate, which was between US$182 per tonne and US$200 per tonne unit most recently.

Premier African also announced that it subscribed for £550,000 in loan notes under its Darwin Strategic Ltd. facility to develop the RHA mine. The company will issue 44 million warrants to Darwin, exercisable at 0.375 pence apiece.

In addition, the company appointed Anthony John Michalec as COO to oversee the transition to commercial production at RHA. Michalec has over 35 years of experience in mining engineering at both open-pit and underground operations across Africa.

In November, Premier awarded African Mining and Exploration the mining contract for open-pit mining at RHA, with first run-of-mine production expected in the first quarter of 2017.