EXHIBIT 4.21 AGREEMENT BETWEEN RECURSOS DE LO ANDES S.A.C., COMPANY'S WHOLLY- OWNED SUBSIDIARY, AND CARLOS MARTIN THOMPSON PALACOOS DATED MAY 11, 2005 [COPY OF AN AGREEMENT CERTIFIED BY A NOTARY, BEARING THE NOTARY'S STAMP AND INITIALS AND THE STAMP...Assignment and Transfer Option of Mining Rights Agreement • June 23rd, 2006 • Amera Resources CORP • Mining & quarrying of nonmetallic minerals (no fuels)
