Ban Houayxai Gold-Silver Operation

The award-winning Ban Houayxai Gold-Silver Operation is located approximately 25 kilometres west of Phu Kham and comprises an open-pit mine feeding ore to a conventional carbon in leach (CIL) and gravity recovery process plant.

Above budget production was achieved at Ban Houayxai in 2017. Total material mined was an annual record of 14.7 million tonnes per annum (Mtpa) and included 5.3Mt of ore. Over 4.9Mt of ore was processed.

The Operation produced 116,475oz of gold and 789,735oz of silver. The C1* cost after precious metal credits of US$817/oz gold and an AISC** of US$817/oz gold was achieved.

March quarter 2018 production

The Ban Houayxai Gold-Silver Operation poured 21,965oz of gold and 136,836oz of silver in doré during the March quarter 2018. An average C1* cost of US$892/oz of gold was realised.

Gold and silver head grades averaged 0.67g/t and 6.59 g/t respectively. A gold recovery percentage of over 76 was achieved.

Payable gold and silver in doré sold during the quarter totalled 21,471oz and 134,331oz respectively.

Award-winning operation

In March 2013, PanAust received the Project Development of the Year Award at the Mines and Money Hong Kong Asia Mining Awards, in recognition of outstanding project management for the development and construction of the Ban Houayxai Gold‑Silver Operation.

Also in March 2013, Ban Houayxai received a '5-star Contamination Control Facility' rating from Caterpillar for its mobile maintenance workshop and associated supply facilities. The Operation has held this rating for four years.

Apart from Phu Bia Mining's operations in Laos, there is only one other operating site worldwide that can match this outstanding level of achievements.

For the most up-to-date information about the Ban Houayxai Operation (including production costs), see the quarterly reports and other statements on the Company Announcements page.


*Brook Hunt convention for the reporting of direct costs comprising: mine site, product transportation and freight, treatment and refining charges and marketing costs; based on payable metal content after by-product credits

**AISC reported are the C1 cost plus royalties, allocated corporate support charges, shared services costs, sustaining capital; lease principal and interest charges; and deferred mining and inventory adjustments capitalised