Since 1914 the Union Oil Company has been successfully exploiting the Santiago claim near Bacuranao, some 12 miles east of Havana. During 1917 and 1918, this company drilled ten wells with varying results. One of these reached a depth of 700 feet, producing three or four barrels of excellent petroleum per day, but was afterwards abandoned. Wells 2 and 3 were abandoned at a depth of only a few hundred feet on account of striking rock too difficult to penetrate. Well No. 4, at a depth of 560 feet, produced oil at the rate of 10 to 15 barrels per day. No. 5 yielded 400 barrels per day. No. 6 was abandoned at 1912 feet without showing any oil. No. 7 yielded petroleum at 1000 feet, but only in small quantities. No. 8, at 1009 feet, produces a good supply of oil. No. 9, at the same depth, also produces oil, while No. 10, sunk to a depth of 1012 feet, produced a little oil at 272 and 1000 feet. These ten wells have all been drilled in a restricted area measuring about 300 meters each way. The crude petroleum of the Union Oil Company’s wells is of a superior quality, analysis showing 13% gasoline and 30% of illuminating oil. Between December, 1916, and June, 1918, these wells produced 1,740,051 gallons of crude. This oil is at present sold to the West Indian Refining Company at the rate of 12¢ per gallon. Just north of the Union Oil Company’s wells are what are known as the Jorge Wells, where the Cuban Petroleum Company have been drilling for oil since 1917. They sank one well to 840 feet, which at first produced 25 barrels a day, but afterwards dropped to two barrels a day, although producing a great quantity of gas. Well No. 2 of this company, sunk to 111 feet, was abandoned. Well No. 3 produced 210 barrels the first day, but afterwards dwindled to an average of 100 barrels a day. In the month of June, 1918, 3,385 barrels of oil were produced, together with a large amount of gas, that is consumed for fuel in the two furnaces of the company. All of this petroleum is sold to the West Indian Refining Company, of Havana. In another section of the Jorge Claim, the Republic Petroleum Company drilled a well to a depth of 2,200 feet, finding petroleum at 995 feet. East of the Santiago or Union Oil Company’s wells, the Bacuranao Company sank a well to a depth of 1009 feet, that produced 12 barrels per hour during several days. This company delivers its oil to market over the Union Oil Company’s pipe lines. The wells drilled on the Union Oil Company’s property, together with those of the Jorge claim, are all grouped in an area that does not exceed 20,000 square meters. Nearly all have produced petroleum at a depth of approximately 1000 feet, most of them in small quantities; but they may nevertheless be considered as producing on a commercial basis, since their product sells at a good price.