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
Silica Dust Causes Silicosis. Silica is found in many rocks, sand, and construction materials. Silica dust is produced while drilling these materials. You can get a lung disease called silicosis by breathing very small silica particles into your lungs. These particles can be seen only with a microscope. Silica Can Disable Or Kill You