The year is 1912 and the place is Detroit. What's going on here?
UPDATE: Many people correctly identified this as the beginnings of a gas holder, or gasometer -- a storage reservoir for what used to be called "city gas," or coal gas (as opposed to the natural and LP gas that we use now). The original caption: "April 4, 1912. Foundation for gas holder, Detroit City Gas Company." | Click image for Comments.
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