# Woad at the rate of 2 iron per 10 QL
# Copper lump at the rate of 5 iron per 10 QL
# Zinc lump at the rate of 5 iron per QL for up to 10 QL 20 iron per QL after 10 QL up to 20QL, 50 iron per QL after 20, iron per QL after 40 QL .
# Stone bricks at the rate of 20 iron per brick