the molds 14 which are filled with hot asphalt into the cooling chamber 18 a coolant dispenser 22 introduces coolant preferably in the form of a water mist into the cooling chamber 18 the air and coolant in the cooling chamber 18 may then be forced or drawn out of the cooling chamber by a vapor remover such as a blower 20 thus lowering the ambient temperature conditions inside the cooling chamber 18 the blower cooling pump and spray nozzles of the present invention are conventional and therefore need not be described in any detail generally in the context of this invention the blower should be capable of removing the water vapor from the cooling chamber such a blower can be obtained from the new york blower company or from the a a maycock company 336 west 700 south salt lake city utah the pump used to circulate the water through the coolant dispenser may be obtained from bell amp gossett 8200 n austin avenue morton grove ill the conveyor may be operated by an hydraulic drive system not shown alternatively the conveyor may be driven by other means including a gasoline or electric motor although it is contemplated that a variety of conveyor systems could be used in the present system the one discussed above and generally illustrated in fig1.