"On January 1, 1960 there were 310 petroleum refineries in the United States, with a crude-oil capacity of 9,901,424 barrels daily, according to the Bureau of Mines'annual survey. Compared with a year ago, this represents a net decrease of three in the number of refineries and an increase of 81,578 , barrels per day in crude-oil throughput capacity. Continuing the trend to fewer units with greater individual throughput , the capacity of the average refinery in the United States increased during 1959 from 31,373 barrels per day to 31,740 barrels per day. Compared with the previous year, total crude-oil capacity of refineries on January 1, 1960 was lower in the Appalachian No. 1, Other Rocky Mountain, and Texas Gulf refinery districts. All other districts showed slight increases in capacity."