Company Web Site: www.greystarresources.com

This report is based on NI 43-101 disclosures and fully diluted share counts available on: 2009-05. Metrics have been updated with stock price and metal prices in effect at the close of Canadian markets on 2010-03-10.

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GoldMinerPulse Most Optimistic Resource Estimate Summary (MORE):
Metrics last with prices in effect at the TSX/TSXV close on 2010-03-10

Project/Deposit	CC	MVpSh	PP%	MI%	I%	Gold	Silver
Angostura	CO	$197.59	0	78%	22%	14.84 M oz	81.35 M oz
GoldMinerPulse Metrics - Total All Projects/Deposits by Metal, prices from 2010-Mar-10
Metric / Metal						Gold	Silver
Metal Totals						14.84 M oz	81.35 M oz
Metal Prices in US$ (from 2010-03-10)						$1,107.10 per oz	$16.99 per oz
Metal Value per Share (MVpSh) (Shown in US$ and based on fully diluted share count shown below)						$182.25	$15.34
Percentage of Total Metal Value						92.24%	7.76%
PP% | MI% | I%						0 | 78% | 22%	0 | 78% | 22%
GoldMinerPulse Metrics - All Metals from All Projects/Deposits and Prices from 2010-Mar-10
Metal Value per Share (MVpSh)						US$197.59
Average Ore Value per Tonne						US$42.23
Metal Value Leverage (MVL)						37.75
Market Capitalization as % of Metal Value						2.6%
Recent Stock Price						C$5.37   (TSX/TSXV close on 2010-03-10.)   Conversion rate used: 1 Cnd$ = 0.974756 US$ )
Fully Diluted Share Count						90.12 M    ( Fully diluted share count is from the Greystar Resources Ltd., Share Structure web page viewed August 2009 plus the additional shares and warrants associated with Tue Sep 29, 2009 Greystar Resources Ltd. Closes C$63,250,000 Public Offering. )
PP% | MI% | I%						0 | 78% | 22%
Gold Metrics-- all Projects/Deposits
Average Gold Ore Grade						1.094 g/t
Market Capitalization     per oz of Gold In Ground						$31.80   US$  |   32.62   C$
Gold Eq Oz Estimate						16.08 M oz   ( 14.84 M oz are in ground)
Market Capitalization     per oz of Gold Equilavent						$29.33   US$  |   30.09   C$
See terms for more about GoldMinerPulse metrics.

Additional Notes:

Proven and Probable Reserves at Angostura    -   Greystar presentation, Prefeasibility Highlights slide, 8 of 20 from May 2009.

Angostura Gold project has a preliminary prefeasibility study showing 8.586M oz of gold in the Proven and Probable category. The proven and probable ounces are however not reported separately from the Measured and Indicated. Therefore, GoldMinerPulse is reporting larger Measured + Indicated figure. To be updated based on future NI 43-101 reports. 

GoldMinerPulse Coverage Status:

• GoldMinerPulse coverage of Greystar Resources Ltd. is complete pending a final internal review.

(NI) 43-101 Report:

Title: Angostura Gold Project Preliminary Feasibility Study Technical Report NI 43-101
Date: 2009-05 (422 pages)

Updates: Resource totals taken from Greystar presentation, Large Feasibility-Stage Gold Resource slide, 6 of 20 from May 2009.

Project Location: Northeastern Colombia, Columbia

Map View: View Greystar Resources Angostura gold property on a Google Map.

Most Optimistic Resource Estimates (MORE):

Metal	MVpSh	Contained Metal Quantity	Ore Grade	Ore Quantity
Gold	$142.45	11.60 M oz	1.090 g/t	330.91 M t
Silver	$12.03	63.83 M oz	6.000 g/t	330.91 M t
Estimate notes: See Greystar presentation, Large Feasibility-Stage Gold Resource slide, 6 of 20 from May 2009.

Metal	MVpSh	Contained Metal Quantity	Ore Grade	Ore Quantity
Gold	$39.80	3.24 M oz	1.110 g/t	90.78 M t
Silver	$3.30	17.51 M oz	6.000 g/t	90.78 M t
Estimate notes: See notes for Measured + Indicated.