How a visit to Killhope can inspire

Hotching tubs:
• What are the tubs doing to the minerals? (sorting by size and weight)
• Try moving the levers to make the hotching tubs move – where is it easiest to hold and
move the handle (lever)?
• Ask the children why and to point out where the fulcrum or pivot point is.
• The longer the distance between the fulcrum and the end of the lever, the easier it is to
move the load.
Settling tanks:
• How does evaporation help to get at the galena here?
• Water cycle – where does the water go when it evaporates?
• Where does it come from to go into the settling tanks?
• The site relies on water. What would happen if there was no rain for a couple of months?
Jigger House
• Water power from the wheel provides the energy needed to work the machinery. What
happens when there is no water?
• Changing the direction of the movement to work different machinery using cogs.
• Sieving and sorting takes place here – and where else?
• Water rises under pressure.
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