The next section to be constructed was the long off-loader arm which worked out to be nearly 19 feet long.
Therre are two conveyor belts on this section. The first is attached to the arm itself and goes to the halfway mark, approximately. This conveyor offloads onto a second one which is carried in another frame which rides on brass train wheel (20 in total) on the underside of the main arm.
The below shot shows the positioning of 4 of the wheels: