4- of 700,000 DWT. San Juan Carriers, Ltd. a wholly owned subsidiary of Cia. San Juan owns 6 of these ships with a capacity of 200,000 DWT. The balance is available through charter arrangements. Last year Cia. San Juan handled approximately 25 billion ton miles of freight. To give you some better understanding of the scope of this operation, this is equivalent to a train of 100 ore cars operating from Salt Lake City to San Francisco leaving here every three hours every day of the year. The third affiliated company I would like to mention is the Pima Mining Company in which we own a 25% interest and which is engaged in the mining and milling of copper from a deposit near Tucson, Arizona. Utah's wholly owned mines are all in the western part of the United States. Our Iron Springs Mine out of Cedar City, Utah sells virtually all of its output to the Columbia-Geneva Division of United States Steel Corporation under a long-term contract running until 1968. Our uranium interests are in Wyoming with the principal operation at Lucky Mc in the Gas Hills District and a lesser operation in the Shirley Basin area. Currently we are mining no coal since we closed down our metallurgical coal mine in Arkansas last year and we are now at work bringing into production a sub-bituminous coal mine in the Four Corners area of New Mexico on the Navajo Reservation. Here we have entered into a fuel agreement with Arizona Public Service Company which has under construction two generating units having a total capacity of 350,000 KW. The agreement between our companies runs approximately 35 years from the time when the first two units