TORONTO, ONTARIO -- (Marketwired) -- 05/30/13 -- The Board of Caledonia Mining Corporation (the "Company") (TSX: CAL)(OTCQX: CALVF)(AIM: CMCL)announces that it was notified on 23rd May that on the same day Jim Johnstone, Non-Executive Director of the Company, sold 24,000 ordinary shares at 67.5p per share. Following this disposal, Mr Johnstone
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