The answer is, well, complicated. When pricing a television commercial, you need to weigh the costs of two separate things: (1) the cost of producing the commercial, and (2) the cost of airing it. It has been estimated that the average cost of producing a 30-second national TV commercial is nearly $350,000.
silicosis and emphysema, chemical and heavy metal poisoning, and heart dis-ease are a few of the health hazards facingfoundryworkers. Extremenoise, heat, dust, andfumes are facts of foundry work. The Ameri-can Foundrymen's Society reports that foundry machinery produces noise Moltenmetalispoureddirectly fromladle
Flash smelting <ul><li>Flash smelting is a smelting process for sulfur -containing ores </li></ul><ul><li>The process was developed by Outokumpu in Finland for smelting copper ore </li></ul><ul><li>The process uses the autogenic principle by using the energy contained in the sulfur and iron for melting the ore </li></ul><ul><li>In the process dried and powdered ore is discharged from a nozzle into a fluidized bed reactor fed with oxygen.