TIDMNUS 
 
Nautilus Closes C$70.5 million First Tranche of Private Placement 
FOR:  NAUTILUS MINERALS INC. 
 
TSX, AIM SYMBOL:  NUS 
 
September 9, 2011 
 
Nautilus Closes C$70.5 million First Tranche of Private Placement 
 
VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 9, 2011) - Nautilus Minerals Inc. (TSX:NUS)(AIM:NUS) has 
received gross proceeds of C$70.5 million from the issue of the first tranche of shares forming part of the 
recently announced private placement. 
 
A total of 27,987,853 shares were issued today in the first tranche at an issue price of C$2.52 per share. 
 
The shares formed part of a total capital raising of C$98.1 million, before expenses, involving the issue of 
approximately 39 million shares. The remaining shares (approximately 11 million) are to be issued on October 6, 
2011. 
 
Application has been made to the AIM Market of the London Stock Exchange for the first tranche of 27,987,853 
shares to be admitted to trading on September 9, 2011. The shares also will be listed for trading on the 
Toronto Stock Exchange. 
 
Further details of the private placement are available on the Nautilus website: 
http://www.nautilusminerals.com/s/Media-NewsReleases.asp?ReportID=476612 
 
The private placement has been made to provide funds for the construction of Nautilus Minerals' seafloor 
resource production system, which initially will be deployed at the company's first deepwater copper and gold 
project at Solwara 1, in the Bismarck Sea of Papua New Guinea. 
 
As a result of the successful capital raising, Nautilus has today reinstated the Engineering, Procurement, 
Construction and Management (EPCM) contract for the supply of the Riser and Lifting System (RALS) for the 
project. The RALS will transport mineralized material from the seafloor to a production support vessel 
approximately 1600 metres above. The EPCM contract, which includes the procurement of RALS components, has a 
target cost of US$115 million. The contract is with world leading oil and gas technology company Technip USA 
Inc. It is the final contract to be reinstated following the partial suspension of the Solwara 1 project in 
December 2008. 
 
About Nautilus Minerals Inc. 
 
Nautilus is the first company to explore the ocean floor for polymetallic seafloor massive sulphide deposits 
and is currently developing its first development project at Solwara 1, in the territorial waters of Papua New 
Guinea, where the company is aiming to produce gold, copper and silver. The company has been granted all 
necessary environmental and mining permits. 
 
The company also holds approximately 600,000 square kilometers of highly prospective exploration acreage in the 
western Pacific, in PNG, the Solomon Islands, Fiji, Vanuatu and Tonga, as well as in international waters in 
the eastern Pacific. 
 
A Canadian registered company, Nautilus is listed on the TSX and AIM stock exchanges and has its corporate 
office in Brisbane, Australia. Its major shareholders include Metalloinvest, the largest commercial iron ore 
producer in Europe and the CIS, which has a 21% holding, and global mining group Anglo American, which holds an 
11.1% interest. 
 
Certain of the statements made in this news release may contain forward-looking statements within the meaning 
of the United States Securities Exchange Act of 1934 and forward-looking information within the meaning of 
applicable Canadian securities law. Forward-looking statements and forward-looking information include, but are 
not limited to statements or information with respect to the completion of the private placement. We have made 
numerous assumptions about the material forward-looking statements and information contained herein. Even 
though our management believes that the assumptions made and the expectations represented by such statements or 
information are reasonable, there can be no assurance that the forward-looking statement or information will 
prove to be accurate. Forward-looking statements and information by their nature involve known and unknown 
risks, uncertainties and other factors which may cause the actual results to be materially different from any 
future results expressed or implied by such forward-looking statements or information. Such risks, 
uncertainties and other factors include, among others, the risk that the project budget is not an accurate 
estimate of funding required, or the private placement is not successfully concluded by some or all parties and 
regulatory approval in respect of the private placement is not received. Should one or more of these risks, 
uncertainties or other factors materialize, or should underlying assumptions prove incorrect, actual results 
may vary materially from those described in forward-looking statements and information. Although we have 
attempted to identify factors that would cause actual results to differ materially from those described in 
forward-looking statements and information, there may be other factors that cause actual results, performances, 
achievements or events to not be as anticipated, estimated or intended. Also, many of the factors are beyond 
our control. There can be no assurance that forward-looking statements or information will prove to be 
accurate, as actual results and future events could differ materially from those anticipated in such 
statements. Accordingly you should not place undue reliance on forward-looking statements or information. 
Except as required by law, we do not expect to update forward-looking statements and information as conditions 
change and you are referred to the full discussion of Nautilus's business contained in Nautilus's reports filed 
with the securities regulatory authorities in Canada. 
 
FOR FURTHER INFORMATION PLEASE CONTACT: 
 
Nautilus Minerals Inc. (Toronto) 
Investor Relations 
+1 (416) 551 1100 
investor@nautilusminerals.com 
 
OR 
 
Nautilus Minerals Inc. 
Joe Dowling 
Vice President Investor Relations and Communications 
+61 (7) 3318 5544 or Cell: +61 431 365 741 
jjd@nautilusminerals.com 
www.nautilusminerals.com 
 
OR 
 
Numis Securities Limited 
John Harrison 
Nominated adviser 
+ 44(0) 20 7260 1000 
 
OR 
 
Numis Securities Limited 
James Black 
Corporate broking 
+ 44(0) 20 7260 1000 
 
Neither the TSX nor the London Stock Exchange accepts responsibility for the adequacy or accuracy of this press 
release. 
 
 
 
Nautilus Minerals Inc. 
 

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