two-huge bulk carriers are in Halifax to load over 35 thousand tons of grain for the Soviet Union under the 500-million dollar Russo-Canadian wheat agreement. the 21-thousand-ton Italian carrier Argea Prima is taking on over 33-thousand tons. The vessel has been in the Nova Scotia capital almost two weeks, but before she could be loaded a complete cleaning job had to be done since she had been carrying crude oil. Earlier her sister ship, the Auriga Prime, loaded 30-thousand tons. Also in to load is the Soviet carrier, Bucharest. She's topping off with 2-thousand tons after taking on over 20 thousand tons of Montreal, but the water at that port was too shallow her to fully load. All the vessels will sail to the Soviet Union by the way of the Mediterranean to Black Sea port to unload. the Soviet Union has made the record grain purchase from Canada following crop failures in that country.