stripmineright

local times = 0
local j = 0

function Mine()
  while turtle.detect() == true do
    turtle.dig()
    sleep(0.50)
  end
  turtle.forward()
  sleep(0.50)
  while turtle.detectUp() == true do
    turtle.digUp()
    sleep(0.50)
  end
  turtle.digDown()
end

function Place(SlotNum)
  turtle.select(SlotNum)
  turtle.back()
  turtle.placeUp()
  turtle.forward()
end

function PlaceChest(SlotNum)
  turtle.select(SlotNum)
  turtle.back()
  turtle.placeDown()
  for I=1, 14 do
    turtle.select(I)
    turtle.dropDown()
  end
  turtle.forward()
end

term.write("How long? ")
times = read()

function Digger()
  for i=1, times do
    j = j+1
    Mine()
    if j == 9 then
          Place(16)
          j = 0
    end
  end
end

function MoveLeft()
  turtle.turnLeft()
  Mine()
  Mine()
  Place(16)
  PlaceChest(15)
  Mine()
  turtle.turnLeft()
end

function MoveRight()
  turtle.turnRight()
  Mine()
  Mine()
  Place(16)
  Mine()
  turtle.turnRight()
end

term.write("How many double shafts? ")
duration = read()
for i=1, duration do
  Digger()
  print(turtle.getFuelLevel())
  MoveRight()
  Digger()
  print(turtle.getFuelLevel())
  MoveLeft()
end