Miner

--Miner
os.loadAPI("bldng/lib")
lib.addtoworth("ore","debris")
lib.addtojunk({"cobble","granit","andesit","gravel","bluestone","cobbled","tuff","rack"})
while not (lib.shouldret() or (math.abs(lib.x)+math.abs(lib.y)+math.abs(lib.z))>100) do
	--check inventoryspace
	if lib.check() then
		lib.clearInv()
	end
	lib.rotate(lib.FORWARD)
	--check if there is already a tunnel
	if (turtle.detect() or turtle.detectUp()) then
		lib.move(0,1,0)
		lib.move(0,0,1)
		lib.move(0,-2,0)
		lib.move(0,0,-1)
		lib.move(0,1,0)
		lib.move(1,0,0)
	else
		print("Skipping Tile")
		lib.movef()
	end
end
lib.clearInv()
lib.goback()