Lumberjack 1.0 (Not Tested)

function main()
    term.clear()
    term.setCursorPos(1,1)
    print("Lumberjack 1.0")
    while true do
        turtle.select(1)
        if turtle.compare() then
            while turtle.detect() do
                turtle.dig()
                turtle.digUp()
                turtle.up()
            end
            while not turtle.detect() do
                turtle.down()
            end
            dropItems()
            turtle.select(2)
            turtle.place()
            turtle.select(1)
        end
    end
end

function dropItems()
    turtle.turnRight()
    turtle.turnRight()
    turtle.select(1)
    turtle.transferTo(51)
    turtle.drop()
    turtle.select(2)
    turtle.transferTo(64)
    turtle.drop()
    turtle.select(3)
    turtle.drop()
    turtle.select(5)
    turtle.transferTo(1)
    turtle.select(6)
    turtle.transferTo(2)
    for i = 3,14 do
        turtle.select(i)
        turtle.drop()
    end
    turtle.select(16)
    turtle.suckDown(4)
    turtle.refuel(4)
    turtle.select(1)
    turtle.turnRight()
    turtle.turnRight()
end

main()