ComputerCraft - Stripminer

local initialized = false
while not initialized do
    print("Place fuel in slot 1.")
    print("Place torches in slot 2.")
    print("Press ENTER to start.")
    read()

    -- fuel
    turtle.select(1)
    initialized = true
    while turtle.getFuelLevel() < 129 do
        if turtle.refuel(1) then
            print("Refueling.")
        else
            print("Invalid fuel.")
            print()
            initialized = false
            break
        end
    end
end

-- setup
turtle.select(2)

-- dig
print("Starting digging.")
for i = 1, 64 do
    turtle.dig()
    turtle.forward()
end

-- turn around
print("Turning around.")
turtle.digDown()
turtle.down()
turtle.turnLeft()
turtle.turnLeft()
-- placing torch
print("Placing torch.")
turtle.placeUp()

-- dig
print("Starting digging.")
for i = 1, 7 do
    turtle.dig()
    turtle.forward()
end
-- placing torch
print("Placing torch.")
turtle.placeUp()
for i = 1, 7 do
    -- dig
    print("Starting digging.")
    for j = 1, 8 do
        turtle.dig()
        turtle.forward()
    end
    -- placing torch
    print("Placing torch.")
    turtle.placeUp()
end
-- finished
print("Finished digging.")