Various people are shown in a workshop working while pushing objects, driving machinery, working machinery and etcetera.
Various people are shown in a workshop working while pushing objects, driving machinery, working machinery and etcetera. a woman
is seen speaking backwards and another speaking the opposite direction. is shown putting a long metal piece into a large machinery and the words " today's topic: welding " appears on the screen followed by a person wearing a mask and welding with a torch. talks to the camera while people go on and off the equipment. then shows off a machine that can be used in wave exercise.