I think the extend of the US nuclear weapons program for Greenland was limited to bombers stationed in Thule. There is a Danish book written about the whole thi

I think the extend of the US nuclear weapons program for Greenland was limited to bombers stationed in Thule. There is a Danish book written about the whole thing, including the accidents. In it there is a paragraph or two about the US government approaching the Danish government, to hear if they would be interested in a briefing about the activities regarding nuclear weapons stationed in Greenland. The answer given to the US was "Absolutely not!". The weapons where not suppose to be there, and the Danish government basically took a "don't ask, don't tell" approach to the whole thing. Still the consensus is that Project Iceworm never really amounted to anything. The shifting ice and snow cover would have made the whole thing a nightmare to maintain. There is a nuclear bomb somewhere under the ice near Thule, which was never recovered after the crash of a B-52.