Talvivaara Mining Company Plc has located the gypsum pond leakage and the flow is being successfully stemmed

Stock Exchange Release
Talvivaara Mining Company Plc
7 November 2012

Talvivaara has located the gypsum pond leakage and the flow is being
successfully stemmed
Preparations for re-start of metals recovery plant are underway

Talvivaara Mining Company Plc ("Talvivaara" or the "Company") has located the
gypsum pond leakage detected on Sunday morning 4 November 2012 near the center
of the approximately 60-hectare pond. The process of plugging has been initiated
and as a result, the flow has already substantially diminished.

As a result of the leakage, some elevated nickel concentrations have been
detected in the northerly direction in the vicinity of the mining concession
area. No leakage waters have been discharged from the mining concession area
towards south as a consequence of the emergency dams and the measures taken.

Preparations for the re-start of the metals recovery plant are being carried
out. Kainuu ELY Centre (Kainuu Centre for Economic Development, Transport and
the Environment) has requested certain additional information from Talvivaara
prior to re-start, which the Company will provide during the course of the next
24 hours. The Company anticipates starting the metals production by this
weekend.

During the shutdown, Talvivaara has reconfigured the process flows enabling the
isolation of the damaged gypsum pond from the solution circulation. In addition,
the new reverse osmosis plant connections have been completed. The re-start of
production at the plant will not cause additional strain on the damaged gypsum
pond, or impact the measures or timing of repairing the pond.

Talvivaara believes that the re-start of the plant is an important step in the
overall environmental risk management of the mine, as the bioheapleaching
process is a continuous process that cannot be stopped over the short term. The
recovery of metals leached into solution is important and justified as opposed
to the accumulation metal-in-solution in the process ponds.

Enquiries
Talvivaara Mining Company Plc Tel: +358 20 7129 800
Harri Natunen, Chief Executive Officer
Saila Miettinen-Lähde, Deputy CEO and CFO

Talvivaara Mining Company Plc
Talvivaara Mining Company is an internationally significant base metals producer
with its primary focus on nickel and zinc using a technology known as
bioheapleaching to extract metals out of ore. Bioheapleaching makes extraction
of metals from low grade ore economically viable. The Talvivaara deposits
comprise one of the largest known sulphide nickel resources in Europe. The ore
body is estimated to support anticipated production for several decades.
Talvivaara has secured a 10-year off-take agreement for 100 per cent of its main
output of nickel and cobalt to Norilsk Nickel and entered into a long-term zinc
streaming agreement with Nyrstar NV. Talvivaara is listed on the London Stock
Exchange Main Market and NASDAQ OMX Helsinki and is included in the FTSE 250
Index. Further information can be found at www.talvivaara.com.

Talvivaara - Gypsum pond leakage and metals plant re-start 7.11.2012:
http://hugin.info/136227/R/1655904/535199.pdf



This announcement is distributed by Thomson Reuters on behalf of
Thomson Reuters clients. The owner of this announcement warrants that:
(i) the releases contained herein are protected by copyright and
other applicable laws; and
(ii) they are solely responsible for the content, accuracy and
originality of the information contained therein.

Source: Talvivaaran Kaivososakeyhtiö Oyj via Thomson Reuters ONE
[HUG#1655904]




Unternehmen: Talvivaaran Kaivososakeyhtiö Oyj - ISIN: FI0009014716