MC Turtle ReinforcedStoneMiner

turtle.refuel()
success, data = turtle.inspect()
while true do
    if success then
        print("found block: ", data.name)
    else
        print("found air")
    end
    counter = 0
    while not success or data.name == "minecraft:cobblestone" do
        turtle.turnLeft()
        success, data = turtle.inspect()
        counter += 1
        if counter == 4 then
            break
        end
    end
    -- should be a block we'd want to mine
    turtle.dig()
    turtle.forward()
end