Invitation to an Extraordinary General Meeting

The shareholders of Metso Corporation are hereby invited to an Extraordinary
General Meeting to be held on Friday, October 12, 2012 at 10.00 a.m. at Scandic
Marina Congress Center, address: Katajanokanlaituri 6, FI-00160 Helsinki,
Finland. The reception of registered participants and the distribution of voting
tickets will commence at 9.00 a.m.

A. Matters on the Agenda of the General Meeting

1. Opening of the meeting

2. Calling the meeting to order

3. Election of persons to scrutinize the minutes and to supervise the counting
of votes

4. Recording the legality of the meeting

5. Recording the attendance at the meeting and adoption of the list of votes

6. Resolution on the payment of extra dividend

The Board of Directors proposes that an extra dividend of EUR 0.5 per share be
paid based on the balance sheet adopted for the financial year which ended
December 31, 2011 in addition to the dividend of EUR 1.70 per share already paid
in accordance with the resolution of the Annual General Meeting held on March
29, 2012. The Board of Directors notes that the sound financial standing of the
Company enables the Company to pay the extra dividend.

The dividend shall be paid to shareholders who on the dividend record date
October 17, 2012 are registered in the Company's shareholders' register held by
Euroclear Finland Ltd. The dividend shall be paid on October 24, 2012.

All the shares in the Company are entitled to a dividend with the exception of
own shares held by the Company.

7. Closing of the meeting

B. Documents of the General Meeting

The proposal on the agenda of the Extraordinary General Meeting, this notice and
the Company's annual report, including the latest financial statements,
consolidated financial statements, report of the Board of Directors and the
auditor's report, are available on the Company's website
http://www.metso.com/egm. Also available on said website are the interim reviews
prepared after the end of the latest financial period, the statement by the
Board of Directors on the events after the preparation of the latest interim
review which have a material effect on the state of the Company and the minutes
of the Annual General Meeting held on March 29, 2012, which include a resolution
on the distribution of dividend made after the end of the latest financial
period. Said documents will also be available at the venue of the General
Meeting. Minutes of the Extraordinary General Meeting will be available on the
above mentioned website as of October 26, 2012 at the latest.

C. Instructions for the Participants in the General Meeting

1. Shareholders registered in the shareholders' register

Each shareholder, who is registered in the shareholders' register of the Company
maintained by Euroclear Finland Ltd on Tuesday, October 2, 2012, has the right
to participate in the General Meeting. A shareholder, whose shares are
registered on his/her personal Finnish book-entry account, is registered in the
shareholders' register of the Company.

A shareholder, who is registered in the shareholders' register of the Company
and who wants to participate in the General Meeting, shall register for the
meeting no later than by October 8, 2012 by giving a prior notice of
participation, which has to be received by the company before the end of the
registration period.  Notice of participation can be given:

- on the Company's website http://www.metso.com/egm,
- by telephone +358 10 808 300 (on weekdays between 8.00 a.m. and 6.00 p.m.),
- by telefax +358 20 484 3125, or
- by mail addressed to Metso Corporation, Ritva Tyventö-Saari, P.O. Box 1220,
FI-00101 Helsinki, Finland.

In connection with the registration, a shareholder is requested to notify
his/her name, personal identification number or business ID, address, telephone
number and the name of a possible assistant, proxy representative or statutory
representative as well as the personal identification number of the proxy
representative or statutory representative. The personal data given by the
shareholders to Metso Corporation is used only in connection with the General
Meeting and with the processing of related registrations.

The shareholder, his/her authorized representative or proxy representative
shall, where necessary, be able to prove his/her identity and/or right of
representation at the venue of the meeting.

2. Holders of nominee registered shares

A holder of nominee registered shares has the right to participate in the
General Meeting by virtue of such shares, based on which he/she on the record
date of the General Meeting, i.e. on October 2, 2012, would be entitled to be
registered in the shareholders' register of the Company maintained by Euroclear
Finland Ltd. In addition, the right to participate in the General Meeting
requires that the shareholder has, on the basis of such shares, been temporarily
registered in the shareholders' register of the Company maintained by Euroclear
Finland Ltd no later than by October 9, 2012 at 10.00 a.m. As regards nominee
registered shares this constitutes a due registration for the General Meeting.

A holder of nominee registered shares is advised to request without delay the
necessary instructions regarding the temporary registration in the shareholders'
register of the Company, the issuing of proxy documents and registration for the
General Meeting from his/her custodian bank. The account management organization
of the custodian bank shall register a holder of nominee registered shares, who
wants to participate in the General Meeting, to be temporarily entered in the
shareholders' register of the Company at the latest by the time stated above.

3. Proxy representative and proxy documents

A shareholder may participate in the General Meeting and exercise his/her rights
at the meeting by way of proxy representation. A proxy representative shall
produce a dated proxy document or otherwise in a reliable manner demonstrate
his/her right to represent the shareholder at the General Meeting. When a
shareholder participates in the General Meeting by means of several proxy
representatives representing the shareholder with shares held at different
securities accounts, the shares by which each proxy representative represents
the shareholder shall be identified in connection with the registration for the
General Meeting.

Possible proxy documents are requested to be submitted in originals to Metso
Corporation, Ritva Tyventö-Saari, P.O. Box 1220, FI-00101 Helsinki, Finland by
the end of the registration period.

4. Further information

Pursuant to Chapter 5, Section 25 of the Finnish Limited Liability Companies
Act, a shareholder who is present at the General Meeting has the right to
request information with respect to the matters to be considered at the meeting.
Further information on matters pertaining to the General Meeting is available on
the Company's website http://www.metso.com/egm.

On the date of publication of this notice, September 12, 2012, the total number
of shares and votes in Metso Corporation is 150,348,256, which includes 592,222
own shares held by the Company. Own shares held by the Company do not have
voting rights in the General Meeting.


Helsinki, September 12, 2012

METSO CORPORATION
Board of Directors



Metso is a global supplier of technology and services to customers in the
process industries, including mining, construction, pulp and paper, power, and
oil and gas. Our 30,000 professionals based in over 50 countries deliver
sustainability and profitability to customers worldwide. Expect results.
www.metso.com, www.twitter.com/metsogroup


For further information, please contact:
Aleksanteri Lebedeff, SVP, General Counsel, Metso Corporation, tel.
+358 20 484 3240

Metso Corporation

Harri Nikunen
CFO

Juha Rouhiainen
VP, Investor Relations

Distribution:
NASDAQ OMX Helsinki Ltd
Media
www.metso.com