FILE PHOTO: A view of the surface of the salt flat at Salar del Hombre Muerto, which is 4,000 meters (13,123 feet) above sea level and north of the Argentine province of Catamarca August 6, 2010. Argentina, Bolivia and Chile, holders of some of the world’s biggest lithium reserves, continue to attract investment from mining companies as the market for the metal continues to grow. Lithium is a key component in rechargeable batteries that power laptop computers, digital cameras and cell phones, as well as hybrid and electric vehicles. Picture taken August 6, 2010. REUTERS/Enrique Marcarian