Section 3. Assets of the Health Fund. The assets of the Health Fund shall consist of the contributions to the Health Fund made by the Producers as required by the collective bargaining agreements in force and effect and payments by Writers whose eligibility for benefits have terminated, together with such policies purchased therewith and the dividends, rate credits, refunds and other sums payable to the Trustees thereon, and any other monies, property or things of value and the interest derived therefrom received and held by the Trustees as assets of the Health Fund for the uses and purposes set forth in the Trust Agreement.