A professional who supervises and coordinates activities of workers engaged in unloading, storing, mixing, and melting raw materials, such as sand, soda ash, and cullet, to make molten glass for use in making flat glass, glass containers, optical glass, or glass fibers. Respnsibilities include:

• Directs unloading of hopper cars, storage of ingredients in bins and silos, and examination of ingredients prior to mixing.
• Schedules mixing and melting of materials to manufacture particular color and composition of glass.
• Ensures mixtures are blended to specifications, using knowledge of raw ingredient mixtures for type of glass produced.
• Reads gauges, charts, and dials to determine if fuel consumption rates, air-to-gas ratios, atmospheric conditions, temperatures, and glass levels in furnace are within specified ranges applying knowledge of glass manufacturing or production specifications for kind of glass produced.
• Adjusts controls or directs subordinates to make corrective adjustments.
• Records amounts and types of ingredients used and in stock.
• Performs other duties described under supervisor master title.
• May analyze raw materials and molten glass to determine if they are of acceptable quality.
• May regulate temperatures of annealing lehrs that control cooling of glass.
• May regulate homogenizer.