Smithy I
Smithy I follows Iron Smithing in the metallurgy technology branch.
Prerequisite
Section titled “Prerequisite”Iron Smithing is the prerequisite.
Technology point cost
Section titled “Technology point cost”Unlocking this technology costs 75 red and 20 blue technology points, with no green point cost.
Unlocks
Section titled “Unlocks”The unlock list contains 
Brick, 
Glass and construction of Smithy I.