An unmanned Russian cargo ship docked with the international space station, a spokesman for Russian mission control said Saturday. The Progress M-59 docked with the station at 5:58 a.m. Moscow time, said spokesman Valery Lyndin. The ship was carrying 2 1/2 tons of fuel, food and other supplies. It had set off Thursday from Russia's main space launch facility at Baikonur, Kazakhstan. The unmanned Progress and manned Soyuz spacecraft have long been the workhorses of the space station program, shuttling crews and cargo back and forth even while the US space shuttle fleet was grounded. Two American astronauts and one Russian cosmonaut are aboard the space station.