Sinchao Metals Corp.

Sinchao Metals Corp.
Andean American Gold Corp.

Andean American Gold Corp.

April 30, 2007 09:00 ET

Sinchao Metals and Andean American Mining Announce Commencement Of Drill Program

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - April 30, 2007) - Sinchao Metals Corp. (TSX VENTURE:SMZ) and Andean American Mining Corp. (TSX VENTURE:AAG) (FRANKFURT:AQN) are pleased to announce the start of new drilling activities at the Sinchao Property in Peru on April 30 , 2007. The 2007 exploration program will involve an initial 5,000-metre diamond drill program to further test the continuity and limits of the Breccia Zone, and to test the High Grade Zinc in the Skarn Zone. In addition, further targets defined by the geophysical surveys will be drill tested and an estimation of inferred resources will be completed in late 2007.

An updated drill map is available at:

Sinchao Metals Corp. was formed by Andean American Mining Corp. in 2006, in order to provide shareholders with the opportunity to participate in the exploration and development of the polymetallic Sinchao Property.

Andean American Mining Corp. held the Sinchao Property in Cajamarca province, northern Peru, since 1996. Initial geological mapping, surface sampling, Induced Polarization and magnetometer surveys were completed in 1996, followed by over 8000 metres of drilling during 1997 and 1998. Results were very encouraging, however, metal prices were at all time lows and exploration was halted. Since 1998, Andean American consolidated its land position and in 2005 acquired 21 hectares contiguous with the existing Sinchao Property to complete its land acquisitions. Sinchao Metals Corp. now owns 100% of the Sinchao Property.

This exploration identified four mineralized systems on the Sinchao Property: the Skarn Zone, the Breccia Zone, the High Sulphidation Epithermal Zone and the Massive Sulphide Lenses. The Skarn Zone and the Breccia Zone each have the potential to host more than 500 million tonnes of mineralization.

1998 Diamond Drilling
Significant Results

From To tion
Hole (m) (m) (m) Zone Cu% Au% Ag% Zn%

SDH-06 356 452 96 Skarn 0.29% Cu 0.72 g/t Au 6.49 g/t Ag 0.92% Zn

SDH-06 430 530 100 Skarn 0.41% Cu 0.22 g/t Au 4.67 g/t Ag 0.21% Zn

SDH-02 300 476 176 Breccia 0.47% Cu 0.45 g/t Au 8.84 g/t Ag 0.13% Zn

SDH-05 230 456 226 Breccia 0.69% Cu 0.41 g/t Au 17.16 g/t Ag 0.33% Zn

SDH-07 219 373 154 Breccia 0.68% Cu 0.80 g/t Au 28.09 g/t Ag 0.33% Zn

SDH-08 486 516 30 Breccia 0.43% Cu 0.26 g/t Au 24.00 g/t Ag 0.01% Zn

SDH-10 74 450 376 Breccia 0.43% Cu 0.56 g/t Au 16.21 g/t Ag 0.28% Zn

These drill intersections have not been followed up.

In 2006 3D Induced Polarization and ground magnetic surveys, and detailed mapping and sampling were completed over the property. Sixty-four samples of massive sphalerite, galena and pyrite within the skarn mineralization returned average values of 14.27% Zinc, 2.40% Lead, 1.87 g/t Gold, 85.04 g/t Silver and 1.40% Copper. The distribution of high-grade zinc and lead within the Skarn Zone is not well understood and there is excellent potential for high-grade lead-zinc skarn mineralization on the Sinchao Property.

Andrew Gourlay, P. Geol., President, is a Qualified Person as defined by National Instrument 43-101 and supervised the preparation of the technical information in this release.

Andrew Gourlay, President, Sinchao Metals Corp.

John Huguet, Chairman & CEO, Andean American Mining

About Sinchao Metals Corp.:

Sinchao Metals Corp. is focused on the exploration and development of the Sinchao property, located in Cajamarca province in Northern Peru, 30 kilometres from Yanacocha, the largest gold mine in South America. The company is dedicated to creating value for its shareholders by pursuing growth, expansion and enhancement of the Sinchao property. For further information please contact the Company at (604) 681-6186 or toll free: 1-888-356-4784. Visit the company website at

About Andean American:

Andean American Mining Corp. (TSX VENTURE:AAG)(FRANKFURT:AQN) is an international mining and exploration company focused on growth both organically and through acquisitions. The Company is actively pursuing new targets of potential early stage gold and silver prospects in Peru and currently has three key assets: the Invicta gold-silver-copper pre-feasibility stage project; 74% of Sinchao Metals Corp., owner of the Sinchao zinc-copper-silver-gold-lead mineralization project; and the 9,000 hectare Santa Rosa property, which is a producing open-pit mine. For further information call (604) 681-6186 or toll free: 1-888-356-4784 or visit our website at

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