Grain milling machine installed near the soil laboratory where the MNGD project is being tested at Addis Ababa Science and Technology University. It is used to grind locally collected plants into powder. Before grinding the coffee husks, the lecturer, Wendimu, filled the gaps with black cotton soil, which is usually the target of “improvement,” to avoid powder leaks from the grinders’ cracks. Noise and scattered dust. I found out that it is quite hard work, as it seems to be necessary to run it through the crusher several times to make it finer.
