PROJECTS

Final Drilling Results for the 2010 Program
Calibre announced final drilling assay results from its La Luna project on August 19, 2010

La Luna Diamond Drilling Results - August 2010

Project	Drill Hole	From (m)	To (m)	Interval (m)	Gold Au (g/t)	Silver Ag (g/t)
LA LUNA	LL10-001	115.70	123.45	7.75	1.43	7.51
	LL10-002	90.00	99.00	9.00	4.63	39.75
	Including	90.00	97.00	7.00	5.88	50.16
	Including	92.40	95.00	2.60	12.2	105.1
	LL10-004	110.72	117.00	6.28	1.63	13.61
	Including	110.72	113.00	2.28	2.11	13.49
	LL10-006	127.00	131.00	4.00	2.77	19.38
	Including	129.00	131.00	2.00	5.08	36.65
		137.60	140.50	2.90	0.85	22.46
	LL10-007	18.95	20.70	1.75	2.99	30.66
		113.70	117.05	3.35	2.40	4.91
	Including	116.39	117.05	0.66	7.14	8.66
	LL10-009	97.92	100.40	2.48	1.39	21.59
		117.62	118.10	0.48	2.54	7.90
		121.50	124.60	3.10	1.59	18.45
		128.10	128.50	0.40	2.40	60.70
		138.55	139.00	0.45	2.75	35.50
		149.00	151.00	2.00	1.03	1.20
	LL10-010	141.00	142.45	1.45	2.66	27.46
		147.51	148.93	1.42	1.32	5.28
	LL10-011	248.00	249.55	1.55	2.98	2.67

Drillholes LL10-003, LL10-005, LL10-008 did not contain significant results.

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La Luna Drill Hole Locations	La Luna Section with LL10-004	La Luna Section with LL10-006	La Luna Section with LL10-007
La Luna Drill Hole LL10-002	La Luna Drill Hole LL10-002	La Luna Drill Hole LL10-002

Exploration success at La Luna
Calibre outlined a new low sulphidation epithermal gold-silver vein trend at La Luna gold project, northeast Nicaragua, during the 2009/2010 exploration season. The La Luna project was advanced through sampling and trenching to the current drill testing stage.

The La Luna project is located approximately 20 kilometres northeast of the town of Rosita and is accessible by gravel road. A small past producer, the La Luna historic gold mine, is located on the La Luna project.

New zone of epithermal veins outlined by soil and rock sampling
Calibre completed 8.4 line-km of infill soil sampling that when combined with historic soil data outlined a 2,200 metre anomalous gold-in-soil trend that bisects the concessions. A new 1,100 metre by 50 metre zone of low-sulphidation style epithermal quartz veins was delineated in the northern extension of the gold-in-soil trend. Mineralization along the new epithermal vein trend was also defined by 23 rock grab samples returning the following grades:

• 5.6 g/t gold, average grade
• 55.4 g/t gold, one sample
• 7.5 g/t silver, average grade
• up to 436 g/t silver

Trenching confirms presence of new zone of epithermal veins
The northern extension of the La Luna vein system was tested by seven trenches over a strike length of 900 metres. Highlights from the 120 metres of trenching include:

• 3.49 g/t gold over 4.2 metres (BTR10-009)
• 2.57 g/t gold over 4.5 metres (BTR10-010)
• 4.93 g/t gold and 191.80 g/t silver over 3.2 metres (BTR10-011)
• 3.20 g/t gold and 90.01 g/t silver over 2.6 metres (BTR10-012)
• 3.77 g/t gold over 2.7 metres (BTR10-017)

Drill program to test new vein system
A diamond drill program is planned as the next stage of testing of the newly outlined epithermal style mineralization. Four holes will test the depth and extent of mineralization along the 1,100 northern vein extension. Two holes to the south will test the depth potential of the historic La Luna pit where trenching by previous operators assayed 3.5 g/t gold over 12.6 metres. A further five holes will test the system at depth.

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La Luna view to the North

La Luna Trenching