That's an excellent question. It was my assumption that there is one in the basement of every old building, probably serving dual duty... whatever it is it would offer more protection than some chalk dust on the sidewalk. Here's my father's answer below...

I don't know where the official bomb shelter is at UNH, but the working definition during our refusal to take shelter demonstration in the spring of 1961 was the other side of a chalk line drawn on the sidewalk on Main St. Let's see, that was on the north side of Main St., just east of Junkins Court, with the "taking shelter" side of the sidewalk the north side, the side away from the street.

As for the official "shelter," maybe Bob Dunn and/or Greg Morrison know [his classmates], as they took tours of the steam tunnels under the sidewalks, and it seems likely that the "shelter" would have been adjacent to these tunnels. By the way, both Bob and Greg participated in that 1961 demo, with Greg doing CD, as did I, and Bob crossing to the safe side of the chalk line. Eighteen were arrested, including the leader Robert Kinsley, who I believe was a graduate student at the time. The headline in the Union Leader was, "Nab 18 for Durham display."

Bob Dunn lives in Portsmouth, and I believe he's listed in the phone book. He might know the anwser to your question.