Explain why a dumper driver at a mine...

Explain why a dumper driver at a mine cannot see a person standing right next to the vehicle. The audience is a new worker on his first day at an opencast mine. Open on the concrete moment: a man walks behind a parked dumper to take a shortcut, and the driver climbs in and reverses. Then show what the driver actually sees from the cab, and how much ground around the machine is invisible to him. Turn on the rule that follows from it, that the worker must get eye contact with the driver before going anywhere near the machine, because the machine cannot see him. Land on the one habit that keeps him alive, never assume you have been seen.