rtokens: Homestake , based in San Francisco , operates gold mines in the United States , Australia , Chile and Canada .
pos: DT NNP NN VBD RB RB JJ TO VB IN NN IN PRP VBZ DT NN .
tokens: A Homestake spokesman was not immediately available to comment on speculation that it tops the list .
ltokens: Placer Dome Inc too was considered unlikley because it is focusing on geographic expansion in areas that do match Santa Fe 's Nevada , South America and Central Asia presence , they said .