Can anyone help me identify the metal used in the nails used to make the ladder used by the bearded gentleman in the middle of this photograph? I have been puzzling at this for a long time now, and decided it?s time to ask for help.
Tommy (?Thomas?)Tompkins Metallurgist,retired Missoula,Missouri, USA
(That’s an excerpt from the article “Exhalations from our readers,” published in AIR 14:2.)