Voltage is stepped up where power is sent through long-distance transmission lines. One of the elements present in varying quantities in coal which contributes to environmental degradation when coal is burned. Compliance'' coal, when burned, emits no more than 1.2 pounds of sulfur dioxide per million Btu. Some Appalachian and much Powder River Basin reserves are of compliance and low sulfur grades. A criteria air pollutant.
Sulfur dioxide is a gas produced by burning coal, most notably in power plants.
Some industrial processes, such as production of paper and smelting of metals, produce sulfur dioxide. Sulfur dioxide is closely related to sulfuric acid, a strong acid. Sulfur dioxide plays an important role in the production of acid rain. A synthetic material that has very low or no electrical resistance. Such experimental materials are being investigated in laboratories to see if they can be created at near room temperatures.