From the NCZ update released 2 days ago:"The Company has...

From the NCZ update released 2 days ago:

"The Company has experienced strong demand for the ‘commissioning concentrate’ currently beingproduced as part of the load commissioning process, as evidenced by the forward sale of 20,000tof production, with demand for further commissioning grade product if made available. Treatmentcharges for the forward sale are more attractive than most existing offtake contracts, including animmaterial impurity penalty associated with silica and no penalties for any other elements"

So I read that as the price for their current product is higher than their offtake prices. 

In the meantime "As part of the load commissioning process, the plant operations team have also continued toprogressively bring concentrate grade toward New Century’s target specification. Steady stateproduction during September continued to achieved good quality saleable zinc concentrate grading47-52% and 3.0-6.5% SiO2.The current ‘commissioning concentrate’ specification has received strong demand and resultingsales, which is discussed further in the ‘Pipeline, Port, MV Wunma & Concentrate Sales Highlights’section of this monthly update."

Fastmarkets MB (or BS) sounds like a story released to make a short position more profitable.