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Argyle Resources Corp. press release

Standard & Poor's Announces Changes In S&P/TSX Canadian Indices

CSE - Canadian National Stock Exchange · Silicon · Hydrogen · Rare Earth Elements · Feldspar · Canada

Dec. 10, 2010 (Canada NewsWire Group) --

TORONTO, Dec. 10 /CNW/ - Standard & Poor's Canadian Index Operations announces the following index changes as a result of the Quarterly S&P/TSX Composite Index Review. These changes will be effective at the open on Monday, December 20, 2010:

| S&P/TSX COMPOSITE INDEX | | | | | ADDITIONS | | | | | Issue Name | Symbol | 60/Completion | Live Composite GICS Sector Index | | Air Canada | AC.B | Completion | Industrials | | Capstone Mining Corp. | CS | Completion | Materials, Div. Metals & Mining | | Denison Mines Corp. | DML | Completion | | | Dollarama Inc. | DOL | Completion | Consumer Discretionary | | Dundee Precious Metals Inc. | DPM | Completion | Materials | | First Majestic Silver Corp. | FR | Completion | Materials | | Flint Energy Services Ltd. | FES | Completion | Energy | | Grande Cache Coal Corp. | GCE | Completion | Materials, Div. Metals & Mining | | Kirkland Lake Gold Inc. | KGI | Completion | Materials | | Neo Material Technologies Inc. | NEM | Completion | Materials | | TransGlobe Energy Corporation | TGL | Completion | Energy | | DELETIONS | | | | | Issue Name | Symbol | 60/Completion | Live Composite GICS Sector Index | | Questerre Energy Corporation | QEC | Completion | Energy |

Changes to the S&P/TSX Composite Index will also affect the S&P/TSX Capped Composite Index. Stocks added to or removed from the S&P/TSX Composite Index will also be added to or removed from the appropriate Global Industry Classification Standard (GICS) sector index.

S&P/TSX GLOBAL GOLD INDEX - DECEMBER 2010 - QUARTERLY REVIEW

| ADDITIONS | | | | Issue Name | Symbol | Exchange | | Crocodile Gold Corp. | CRK | TSX | | Intrepid Mines Limited | IAU | TSX | | Keegan Resources Inc. | KGN | TSX | | Sulliden Gold Corporation Ltd. | SUE | TSX |

S&P/TSX GLOBAL MINING INDEX - DECEMBER 2010 - QUARTERLY REVIEW

| ADDITIONS | | | | Issue Name | Symbol | Exchange | | Augusta Resource Corporation | AZC | TSX | | Avalon Rare Metals Inc. | AVL | TSX | | Baja Mining Corp. | BAJ | TSX | | Breakwater Resources Ltd. | BWR | TSX | | Cline Mining Corporation | CMK | TSX | | Cloud Peak Energy Inc. | CLD | NYSE | | Copper Mountain Mining Corporation | CUM | TSX | | Crocodile Gold Corp. | CRK | TSX | | ECU Silver Mining Inc. | ECU | TSX | | Endeavour Silver Corp. | EDR | TSX | | Gold Resources Corp. | GORO | AMEX | | Golden Minerals Company | AUM | TSX | | Intrepid Mines Limited | IAU | TSX | | Keegan Resources Inc. | KGN | TSX | | MAG Silver Corp. | MAG | TSX | | Minera Andes Inc. | MAI | TSX | | Platinum Group Metals Ltd. | PTM | TSX | | Sabina Gold & Silver Corp. | SBB | TSX | | Sulliden Gold Corporation Ltd. | SUE | TSX | | UEX Corporation | UEX | TSX | | Uranium Energy Corp. | UEC | AMEX |

S&P/TSX GLOBAL BASE METALS INDEX - DECEMBER 2010 - QUARTERLY REVIEW

| ADDITIONS | | | | Issue Name | Symbol | Exchange | | Augusta Resource Corporation | AZC | TSX | | Avalon Rare Metals Inc. | AVL | TSX | | Baja Mining Corp. | BAJ | TSX | | Breakwater Resources Ltd. | BWR | TSX | | Cline Mining Corporation | CMK | TSX | | Copper Mountain Mining Corporation | CUM | TSX | | Sabina Gold & Silver Corp. | SBB | TSX |

S&P/TSX CANADIAN DIVIDEND ARISTOCRATS INDEX - DECEMBER 2010 - ANNUAL REVIEW

| ADDITIONS | | | Issue Name | Symbol | | Bird Construction Income Fund | BDT.UN | | Enbridge Income Fund | ENF.UN | | North West Company Fund | NWF.UN | | Rogers Communications Inc. | RCI.B | | Tim Hortons Inc. | THI |

| DELETIONS | | | Issue Name | Symbol | | AltaGas Ltd. | ALA | | Allied Properties REIT | AP.UN | | Bell Aliant Regional Communications Income Fund | BA.UN | | Bank of Nova Scotia | BNS | | CML Healthcare Income Fund | CLC.UN | | Canadian Tire Corporation | CTC.A | | Cominar REIT | CUF.UN | | Canadian Western Bank | CWB | | Davis & Henderson Income Fund | DHF.UN | | EnCana Corporation | ECA | | Great-West Lifeco Inc. | GWO | | Industrial Alliance Insurance and Financial Services Inc. | IAG | | IGM Financial Inc. | IGM | | Just Energy Income Fund | JE.UN | | Methanex Corporation | MX | | Parkland Income Fund | PKI.UN | | Power Corporation of Canada | POW | | Power Financial Corporation | PWF | | RioCan REIT | REI.UN | | Ritchie Bros. Auctioneers Inc. | RBA | | Toronto-Dominion Bank | TD | | Uni-Select Inc. | UNS |

Company additions to and deletions from an S&P index do not in any way reflect an opinion on the investment merits of the company.

About S&P Indices

S&P Indices, a part of McGraw-Hill Financial, is the world's leading index provider maintaining a wide variety of investable and benchmark indices. Over $1.25 trillion is directly indexed to Standard & Poor's family of indices, which includes the S&P 500, the world's most followed stock market index, the S&P/Case-Shiller Home Price Indices, the leading measure of U.S. home prices, the S&P Global BMI, an index with approximately 11,000 constituents, the S&P GSCI, the industry's most closely-watched commodities index and the S&P National AMT-Free Municipal Bond Index, the premier investable index for U.S. municipal bonds. For more information, please visit www.standardandpoors.com/indices.

About McGraw-Hill Financial

McGraw-Hill Financial, a part of The McGraw-Hill Companies (NYSE: MHP), is a leading provider of research and analytical tools for investment advisors, wealth managers and institutional investors. It deploys the latest innovative technology strategies to deliver to customers a portfolio of cross-asset analytics, integrated desktop services, valuation and index benchmarks and investment recommendations in the rapidly growing $16 billion financial information, data and analytics market.

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| Tony North 1 416 507 3200 sp_index@standardandpoors.com | Dave Guarino 1 212 438 1471 dave_guarino@standardandpoors.com |

Earlier from Argyle Resources Corp.