Solar energy furnace for production of enormous heat at Massachusetts, United States. The Army Quartermaster Corp shows a new solar furnace that captures the suns rays in a 1400 square foot heliostat. Situated at Lake Cochituate, it is capable of generating heat close to that of a nuclear explosion. Officers watch the furnace as it burn through a steel sample. It will be used to test effects of nuclear bombs on various materials, without the logistics and expense of nuclear test firings.