mine

function enderplace()
 while not turtle.place() do
 turtle.dig()
 end
end

function empty()
for i = 1 , 14 do
 turtle.select(i)
 turtle.drop()
 end
end

function tunnel()
  for i = 1 , 8 do
  turtle.dig()
   while not turtle.forward() do
   turtle.dig()
   end
 end
end

function turn()
 turtle.digUp()
 turtle.turnLeft()
 turtle.turnLeft()
  while not turtle.up() do
  turtle.digUp()
  end
end

function turnDown()
turtle.digDown()
turtle.down()
turtle.turnLeft()
turtle.turnLeft()
end

function transition()
 turtle.turnRight()
 while not turtle.forward() do
 turtle.dig()
 end
end

z = 0
while z == 0 do
for i = 0 , 28 do
 if turtle.getItemCount(10) == 0 then
 turtle.turnRight()
  for y = 1 , 9 do
   tunnel()
   turn()
   end
tunnel()
turtle.turnRight()
turtle.dig()
turtle.forward()
turtle.turnRight()
  for x = 1 , 9 do
  tunnel()
  turnDown()
  end
tunnel()
transition()
else do
 turtle.dig()
 turtle.select(15)
 enderplace()
 empty()
 turtle.select(15)
 turtle.dig()
 turtle.select(16)
 end
 enderplace()
 turtle.select(1)
 turtle.suck(64)
 turtle.refuel(64)
 turtle.select(16)
 turtle.dig()
 turtle.select(1)
  end
 end
end