February 24, 2012 - Toronto, Ontario - Trelawney Mining and Exploration Inc. (the "Company" or "Trelawney") (TSXV: TRR, Frankfurt: RTW ) is pleased to announce the results of an updated resource estimate for the Côté Lake Deposit on the Chester Project located halfway between Timmins and Sudbury in Northern Ontario.

The mineral resource estimate has been audited by Roscoe Postle Associates Inc. ("RPA") and reported in accordance with National Instrument 43-101 requirements. The resource estimate was prepared by Trelawney's Consulting Geologist Jamie Lavigne, P.Geo., with the assistance of Mohan Srivastava, P.Geo., Consulting Geostatistician with FSS Canada.

The estimate has an indicated resource of 35 million tonnes averaging 0.82 g/t for contained gold of 0.93 million ounces and inferred resource of 204 million tonnes averaging 0.91 g/t for 5.94 million ounces of contained gold. A cut-off grade of 0.3 g/t Au was used for the estimate. The new resource estimate represents an overall increase of 63% in the total ounces of gold over the 2011 resource estimate.

Table 1 demonstrates the mineral resource at the 0.3 g/t Au cut-off grade and at several additional cut-off grades for comparison. A preliminary Whittle open pit design was prepared for the block model to test the mineral resource criteria of reasonable prospects for economic extraction. Only mineralization falling within the preliminary pit shell has been included in the resource estimate. The effective date of this resource estimate is February 24, 2012 and the cut-off date for assay data is December 16, 2011.

TABLE 1 MINERAL RESOURCE ESTIMATE
February 24, 2012

Trelawney Mining and Exploration Inc. - Côté Lake Project

Classification Cut-off Grade
g/t Au 		Tonnes Millions Grade
g/t Au  		Contained Au
Millions of oz
Indicated  0.25  37  0.80  0.95
Indicated 0.3   35  0.82  0.93
Indicated 0.4   31  0.88  0.89
Indicated   0.5  26  0.96  0.81
Inferred  0.25  212  0.88  6.02
Inferred  0.3  204  0.91  5.94
Inferred  0.4  181  0.97  5.66
Inferred  0.5  154  1.06  5.26

This mineral resource estimate is based on a total of 129 holes for a total of 65,866 metres drilled from December 2009 to September 2011. Mineralized wireframes were interpreted and used to constrain grade interpolation by ordinary kriging with validation by inverse distance.

Greg Gibson, Trelawney's President and CEO commented, "We are extremely pleased with the significant increase in the resource estimate in the Côté Lake Deposit. The increase in confidence from the drilling and the upgrading of almost a million ounces into the indicated category is a significant step forward for the project. With our current aggressive diamond drill program we look forward to upgrading the remaining inferred resource, and rapidly advancing the project to the next step."

The expansion and definition drill program on the Côté Lake Deposit is ongoing with nine drills currently working on expanding and defining the deposit. The focus of the winter drilling has been to complete infill drilling of the 50 metre sections on the wetlands. One drill is focusing on extending the mineralization to the north.

The Trelawney mineral resource estimate for the Côté Lake Project has been audited and accepted by Dr. William E. Roscoe, P.Eng., Principal Geologist with RPA, an independent qualified person under NI 43-101, who has also reviewed and approved the contents of this release.

David Beilhartz, Vice President, Exploration of Trelawney, a Qualified Person under NI 43-101, has prepared or supervised the scientific or technical information for the property and verified the data disclosed in this press release. Trelawney is a Canadian junior mining and exploration company with a focus on Archean gold deposits. The Company's current focus is directed towards the continued exploration and development of the Côté Lake Deposit, located in Chester Township, 20 kilometres southwest of Gogama, Ontario.

For further information contact:

Greg Gibson, President and CEO
416-363-8567 or ggibson@trelawneymining.com