Location

The West Keefer Claims properties are located in Keefer Township of the Porcupine Mining Division of Ontario (West Timmins area).

Number of Claims & Hectares

3 claims for 34 claim units for approximately 544 hectares.

Exploration Target

Gold.

Date of Acquisition via Option Agreement

January 2nd, 2010

Ownership Interests

100% Mainstream Minerals Corporation.

Operator

Mainstream Minerals Corporation.

Qualified Person as per National Instrument 43-101 (subject to change)

Brian H. Newton P.Geo.

West Keefer Claims Mags & Maps

Informaton

The West Keefer Claims were acquired via an option agreement dated January 2nd, 2010 and are divided into a northern block of 26 units and a southern block of 8 claim units. Both of these newly optioned blocks are located immediately north of the Destor-Porcupine Fault System and are accessible via year-round gravel roads. The Destor-Porcupine Fault is a regional fault system in the Timmins Gold Belt that has been attributed as a major contributor of the gold bearing quartz vein systems of the prolific Timmins Mining District where over 70 million ounces of gold have been produced.

The northern block of 26 claim units has numerous splays running north from the volcanic belt that overlaps the southern portion of the property. Shear zones and quartz veins were discovered just south of Little Star Lake in the 1930s. Little assessment work has been filed over the years on this property, and as such, the property deserves a closer look using modern exploration methods.

The southern block of 8 claim units is also accessible by the same gravel road as the northern block. It is underlain by volcanic and granitic quartz diorite. There are two faults transecting the property in opposite directions. This property has also seen limited work over the years.

Under the terms of the Option Agreement, Mainstream Minerals can earn a 100% interest for both properties by issuing 900,000 common shares of the Company to the Vendors.

The Vendors will retain a 2.0 % Net Smelter Return (the “NSR”) interest in both properties. Mainstream can buy back 1.0% of the NSR for both properties for a single cash payment of $1,000,000 to the Vendors.