SAO PAULO, March 6 (Reuters) - A conveyor belt system

collapsed at a grain terminal at the port of Barcarena in

northern Brazil, according to a navigation sector source and a

soybean analyst on Thursday.

The collapse caused grain shipments to be suspended, the two

sources said naming ADM and Viterra as responsible for

operating the terminal.

ADM deferred questions to the local port authority. Viterra

could not be reached for comment.

"The terminal is completely unaccessbile," the navigation

sector source said. "It cannot receive grains from barges or

load vessels."

The conveyor belt collapsed after being hit by an on-passing

barge, according to the navigation sector source. G1, a local

media outlet, said a ferry had hit the structure, citing workers

present at the scene.

Emergency services rescued eight people, four of whom were

injured, the G1 report said. The victims were taken to a

municipal hospital and there are not reported casualties, G1

said citing local authorities.

Reuters could not immediately reach Barcarena officials or

the local port authority for comment.