Turtle + Miningwell

turtle.moveUp()
turtle.turnLeft()
turtle.turnLeft()

i = 16
while i < 0 do
    turtle.select(1)
    turtle.placeDown()
    turtle.select(2)
    turtle.placeUp()
    turtle.back(1)
    turtle.select(3)
    turtle.place()
    i = i - 1
end