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“EXCELLENCE THROUGH KNOWLEDGE” P A G E 76 impact on energy costs. Some factories are struggling well below their throughput rating. The grip caused by the roughening will increase throughput. From a manpower’s standpoint, the arcing process to a given standard and analysis needs “welders” that are highly trained, so as to at least understand the effects of the welding parameters on the quality of the area arced. The investigation revealed that the welders used for the arcing process had no formal training in “welding” and lacked the basic educational requirements at the entry level for such training. Recommendations: Best practice for arcing mill roll shells requires that the Phosphorous level be kept below 0.07% and multiple layers be used in order to obtain the desired result. The standardization of the grey cast iron mill roll shells to the ASTM Type A Size 3 is recommended. Courses designed specifically to train welders for mill arching should be pursued. Further Work: Because the milling efficiency (juice extraction/bagasse moisture content) is a function of the roughness of the roller shell. The determination of the degree of roughness would be beneficial to the industry. This can be established with equipment already available for this purpose. These will be procured so that measurements will be determined as we continue to evaluate this process. Editor’s Note: This research was presented at Jamaica Association of Sugar Technologists Conference November 7-8, 2002, Renaissance Jamaica Grande Resort – Ocho Rios, Jamaica.