Ekwan-X, a Toronto-based mineral exploration company, said it entered into an agreement to purchase 100,000 square kilometers of satellite images from Aster Images Inc. The images cover a vast area of southwest Nevada stretching from Las Vegas to Reno. The imagery comes from the Aster satellite, which is operated by the National Aeronautics and Space Administration and the government of Japan. Ekwan-X said it would use the images to identify potential mineralized targets. Financial terms of the agreement were not disclosed.