Growers contracted to deliver cane to a mill shall have the right to participate in filter press cake residual from the milling process in accordance with such arrangements as may be made between that mill and its Mill Group Board and, failing that, such arrangements as may be decided by the Administration Board. If a mill loads, rails or delivers such cake, the cost of such service shall be paid by the growers concerned and delivery shall be in accordance with arrangements to be made to suit the convenience of the parties concerned.