The Government decrees to validate the Regulation. The document consists of X Sections that contain 40 Articles. Section I establishes the rules of concession of subsoil in use. Section II specifies the modes of concession. Section III regards the concession through direct negotiations. Section IV regards the organization of investment programs tender for the concession of subsoil in lease for either prospecting or extraction, or combined prospecting and extraction. Section V deals with the moda