Highlights
      -  The proposed mine plan calls for the production of more than 4
         million ounces of gold
      -  Guyana's project economics at today's gold price of US$ 950 per oz
         show a pre-tax IRR of 27%, NPV of US$ 678 million at a discount rate
         of 7% per year, and a payback of 3.9 years with a pre-tax cash flow
         of US$ 1.64 billion (AMEC's base case results are shown below under
         the heading "Economics").
      -  An engineering solution which addresses potential flooding has been
         designed and consists of an embankment along the river

    Key Findings of the PA

    Geology & Resource Estimate
      -  A resource estimate was completed using revised cut-off grades in
         both the open pit and the underground mine, 0.85 grams per tonne
         (g/T) and 2.0 g/T respectively; the indicated resource is
         24.1 million tonnes at 4.1 g/T for 3.2 million ounces and the
         inferred resource is 12.9 million tonnes at 3.3 g/T for 1.4 million
         ounces

    Mining
      -  The proposed design is based on a combination of surface and
         underground mining; the mine would start as an open pit and the
         conceptual design of a single pit is progressing; underground mining
         would follow with access through both ramps and a main shaft;
         preferred mining methods have been selected
      -  The open pit tonnage in the proposed mine plan is 17.9 million
         tonnes at an average grade of 2.8 g/T, while the underground tonnage
         is 18.1 million tonnes at an average grade of 4.5 g/T

    Processing
      -  The mineralized material is mainly non-refractory sulphides (hard
         rock) with a small portion of oxides (saprolite) near surface
         calling for conventional gold milling with recoveries above 95%
      -  A process flow which incorporates a Semi-Autogenous Grinding (SAG)
         and ball mill combination as well as gravity and Carbon In Pulp
         (CIP) circuits has been designed and key equipment has been
         identified
      -  Average throughput (for the first 9 years) - 8,000 tonnes per day
      -  Total gold produced - 4.0 million ounces
      -  Average annual gold production - 250,000 ounces (based on 16 full
         years of production)

    Water Management
      -  River embankment - the design and engineering of an embankment
         (river dyke) is well advanced; this dyke is designed to protect a
         small area of the northern portion of the site from potential
         flooding during exceptional events
      -  Surface water - an extensive surface water management system,
         including drainage, ponds and diversion ditches, is being designed
         and engineered to manage and control surface water in a tropical
         environment

    Logistics & Infrastructure
      -  On-site infrastructure - conceptual design is advanced; this
         includes a main gate, new airstrip, roads and accommodations

    Schedule
      -  Development & Construction - 2 years (2010-2012)
      -  First year of open pit production - 2012
      -  Open pit life - 9 years (2012-2020)
      -  First year of underground production - 2015
      -  Underground life - 14 years (2015-2028)
      -  Total mine life - 17 years (2012-2028) - 16 full years of production

    Economics
      -  Capital expenditures
         -  Pre-production development (surface & open pit) - US$ 262M
         -  Surface equipment - US$ 21M
         -  Underground development - US$ 147M
         -  U/G equipment - US$ 10M
         -  Sustaining (includes closure) - US$ 80M

      -  Operating Cash Costs of US$ 364 per oz
         -  AMEC's base case project economics, at a gold price of US$ 750
            per oz, show a pre-tax IRR of 16.3%, NPV of US$ 236 million at a
            discount rate of 8% per year, and a payback of 6.0 years with a
            pre-tax undiscounted cash flow of US$ 878 million

    Guyana is also providing the following update:

    Off-site Infrastructure
      -  Port and Road - design includes a small port facility and an access
         road extension; wharf and pier design as well as a secured lay-down
         area for the port is complete; options on the 40-km extension of the
         existing road are under study
      -  Hydropower dam - site topographical survey is in progress

    Environmental & Social Impact Assessment ("ESIA") and Permitting
      -  Studies related to the ESIA are largely complete
      -  Permitting process is proceeding well; a Preliminary Environmental
         Impact Assessment was submitted to the Guyanese Environmental
         Protection Agency in June 2009

    Guyana's internal financial model, based on the PA, establishes the
following economics (all in US$):

    -------------------------------------------------------------------------
     Gold Price     NPV @ 7%     Cash Flow       IRR     Payback (years)
    -------------------------------------------------------------------------
       $ 800          $ 383M        $ 1,069M        19%           5.3
    -------------------------------------------------------------------------
      $ 1,000         $ 777M        $ 1,832M        30%           3.6
    -------------------------------------------------------------------------
      $ 1,200        $ 1,171M       $ 2,595M        39%           2.8
    -------------------------------------------------------------------------