in the village of Silungkang, Sawahlunto, West Sumatra there is a coffee mill. the grinder is moved by a water mill.
the water flow uses irrigation flow. made entirely of wood. established since 1950.
   this wheel moves two things. first move the coffee grill and the second moves the pestle.
the coffee produced is fragrant and very delicate.
   now this factory only works two days a week. this is due to the reduced supply of coffee and the increasing number of coffee factories with diesel engines.
interview. main E. 75 years old
                  water mill production costs save 50% more than diesel engines. since 1985 the wheel bearings have been replaced with bearings. used to use wood, but it quickly wears out