MOSCOW, April 2 (Reuters) - Output at the Kashagan oil

field, one of Kazakhstan's largest, fell to 30,342 metric tons

on April 1 from 52,390 tons a day earlier, two sources familiar

with the data told Reuters on Tuesday.

An ecological organisation in Kazakhstan said on Tuesday

that a large oil spill had been captured by satellite imagery in

the northern Caspian Sea near Kashagan.