Vanning
（重定向自Frue Vanner）
![End, side and overhead views of a Frue Vanner](/Images/godic/202501/14/Frue_Vanner_diagrams1133.png")
![Vanner room, Treadwell gold mine, 1887. These vanners served a 120 stamp mill battery. Note railroad tracks in aisle.](/Images/godic/202501/14/Mill,_Treadwell_gold_mine,_18871133.jpg")
Vanning is a type of ore dressing by which ores are washed on a shovel. Typically, a powdered sample of orestuff is swirled with water on the blade of a shovel and then given a series of upward flicking motions. The heavier ore is tossed up through the water and appears as a crescent shaped patch at the top of the charge with the lighter gangue below. Developed in western England, this process was still in use at a major tin mine until 1985.