While excavating for our new house I have found a lot of old glass. Mostly bottles, with most dating back before 1900. I have found skirt sections of a Hemingray-made CD 162 and my hired man pulled a chunk of CD 134 1871 Patent out of the ground a couple days ago. Tonight as it was getting dark I was cutting back the face of a trench and saw a familiar looking bolt sticking out of the dirt. See next pic for whole pin.