H. No. 16361 / 63 OG No. 8, 1734 (February 20, 1967)
"The term basic chemical industries, including fertilizers, shall refer to the manufacture of basic industrial chemicals such as acids, alkalis, salts, except calcium hydroxide, intermediates, dyes, colour lakes and toners; explosives; ammunitions; synthetic resins; synthetic rubber; fertilizers; all chemicals for the production of medicants and insecticides; petro-chemical; bitumen; sucrochemical; and coke and coal chemicals,"SEC. 2. Subsections (a), (b) and (c) of Section six of the same Act are amended to read as follows:
"(a) One hundred per centum of the taxes due during the period from the date of approval of this Act to December thirty-first, nineteen hundred sixty-seven;SEC. 3. This Act shall take effect upon its approval.
"(b) Seventy-five per centum of the taxes due during the period from January first, nineteen hundred sixty-eight to December thirty-first, nineteen hundred sixty-nine;
"(c) Fifty per centum of the taxes due during the period from January first, nineteen hundred seventy to December thirty-first, nineteen hundred and seventy-one after which such person, partnership, company or corporation shall be liable in full to all taxes:"