Treasure hunt: FBI emails spark renewed interest in Pennsylvania gold cache 9 Mar, 2021 02:49 AM 6 minutes to read '7 to 9 tons' of Civil War gold went missing in the Pennsylvania woods, but it may have already been claimed. Photo / Unsplash, Jingming Pan '7 to 9 tons' of Civil War gold went missing in the Pennsylvania woods, but it may have already been claimed. Photo / Unsplash, Jingming Pan Other Go for the gold? The US government went looking for it. FBI agents were looking for an extremely valuable cache of fabled Civil War-era gold — possibly tons of it — when they excavated a remote woodland site in Pennsylvania three years ago this month, according to government emails and other recently released documents in the case.