VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 03/29/12 -- Arco Resources Corp. (TSX VENTURE: ARR) ("Arco" or the "Company") announces that based on the recommendation of the board of directors of Argentum Silver Corp. (TSX VENTURE: ASL), the optionee of Arco's Lachiguiri, Silacayoapan and Nino Perdido properties located in Oaxaca, Mexico, Arco filed with the General Direction of Mines in Mexico to reduce the size
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