Strip Mine (No Enderchests)

local GRAVEL_FALL_TIME = 0.6
local ENDERCHEST_FAIL_WAIT_TIME = 0.5
local SLOT_ENDERCHEST_ITEMS = 1
local SLOT_ENDERCHEST_FUEL = 2
local SLOT_MINING = 2

function mine1()
    while turtle.detectUp() do
        turtle.digUp()
        sleep(GRAVEL_FALL_TIME)
    end
    while turtle.detect() do
        turtle.dig()
        sleep(GRAVEL_FALL_TIME)
    end
    turtle.digDown()
    while not turtle.forward() do
        turtle.dig()
        sleep(GRAVEL_FALL_TIME)
    end
end

function mine1row()
    for i=1,45 do
        mine1()
    end
end

function mine2rows()
    mine1row()
    turtle.turnLeft()
    mine1()
    mine1()
    mine1()
    mine1()
    turtle.turnLeft()
    mine1row()
end

function mineFull(length)
    for i=1,length do
        turtle.select(2)
        turtle.turnRight()
        mine2rows()
        turtle.turnRight()
        print("Continuing row ", i)
        mine1()
        mine1()
        mine1()
        mine1()
        turtle.turnLeft()
        turtle.turnLeft()
        turtle.select(SLOT_ENDERCHEST_ITEMS)
        while not turtle.place() do -- Place down enderchest
            turtle.dig()
        end
        for j=2,16 do
            turtle.select(j)
            turtle.drop()
        end
        turtle.turnLeft()
        turtle.turnLeft()
    end
end

function mineReturn()
    mineFull(32)
end

mineReturn()