Section 32A of Chapter 94C is hereby amended by striking out paragraph (c) in it's entirety and hereby inserting in it's place the following:

"(c) Any person who knowingly or intentionally manufactures, distributes, dispenses or possesses with intent to manufacture, distribute or dispense phencyclidine or a controlled substance defined in clause (1) of paragraph (a), in clause (4) of paragraph (a) or in clause (2) of paragraph (c) of class B of section thirty-one shall be punished by a term of imprisonment in the state prison for not less than two and one-half nor more than ten years or by imprisonment in a jail or house of correction for not less than one nor more than two and one-half years. No sentence imposed under the provisions of this section shall be for less than a mandatory minimum term of imprisonment of one year and a fine of not less than one thousand nor more than ten thousand dollars may be imposed but not in lieu of the mandatory minimum one year term of imprisonment, as established herein."