Aluminum is the most abundant metallic element in the Earth's crust. Bauxite ore is the main source of aluminum. Aluminum is used in automobiles and airplanes (36%), bottling and canning industries (25%), building and electrical (14%) and in other applications (25%).
A: The average propane consumption per year for whole-house heating is estimated to be between 1200 and 1500 gallons per year for a 2,200 square foot home. However, the amount of propane a household uses varies depending on its specific uses in the household.
Still, this is a good indication as to the variations you can expect in current propane prices from propane companies. Current propane prices per gallon are higher than they were last year. According to the US EIA, the average national current propane price is $2.76 per gallon (23 December 2013).