Characteristics: Bismuth is a brittle, silvery-green metal that has a low melting temperature and high specific gravity. Being both stable and non-toxic, bismuth is often used as a replacement for toxic metals such as antimony, cadmium, lead and mercury.
1 (Minimums vary by location and tank size, and can range from 100-1,500 gallons.) More often, the propane company charges a fee of anywhere from $25-$250 a year but averaging around $75-$130 annually, depending on local rates, the size of the tank and whether it's aboveground or underground.
States with the most expensive gas. U.S. gasoline prices have fluctuated between $3.40 and $3.60 for the past few months. As of Tuesday, the average fuel price nationwide was $3.63 per gallon, up from $3.48 per gallon a week ago.