Leading lines of lead

OK, so this is absolutely taken for the Weekly Blip Challenge theme of LEAD. There are at least a couple of ways of using the letters LEAD and I have tried to incorporate them into one image. The pencils probably aren't lead these days due to some political correctness of the fact children may nibble on them and get lead poisoning (never did me any harm!) but bear with me on that and pretend they are and enjoy the lead in to the main focus of the image, the chemical symbol for lead.