• The Who, What, Where, Why and When of the Strategic Petroleum Reserves

    The Strategic Petroleum Reserve (SPR) is the United States' emergency oil stockpile, and it is the largest emergency petroleum supply in the world. The reserve stores about 700 million barrels of crude oil in underground salt caverns at four sites along the Gulf of Mexico. A barrel contains 42 gallons or 159 liters of oil. Each cavern is about 2,000 feet deep and holds about 10 million barrels of oil. The government uses salt caverns because it costs less than storing oil in aboveground tanks...