basicRoom

local FUEL = true
local GRAVEL_FALL_TIME = 0.5

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

function mine2Rows()
    turtle.turnRight()
    for i=1,11 do
        mine1()
    end
    turtle.turnLeft()
    mine1()
    turtle.turnLeft()
    for i=1,11 do
        mine1()
    end
    turtle.turnRight()
    mine1()
end

for i=1,5 do
    mine2Rows()
end