Notwithstanding the provisions of the Investment Code, 1981 (Act 437) relating to the mining industry, the provisions of this Law or of any petroleum agreement or petroleum sub-contract entered into thereunder shall not entitle a contractor or sub-contractor -

(a) to the exemption from payment of company tax granted under paragraph (2)(b)(i) of sub-part B of Part II of the Third Schedule to the Investment Code, 1981 (Act 437); or

(b) to the guarantee of extended management control granted under paragraph (2)(b)(ii) of sub-part B of Part II of the said Third Schedule; or

(c) to the exemption from payment of company tax granted under paragraph (2)(b)(iii) of sub-part B of Part II of the said Third Schedule; or

(d) to the benefits granted to approved enterprises generally under sub-part A of Part II of the said Third Schedule.