The Manhattan Project was the code name for the research effort that sought to produce the first atomic bomb. Research took place at a number of sites across the US, England and Canada, and involved scientists from each of these countries. The project began on a small scale but ended up employing around 130,000 people and costing, in today's terms, $22 billion dollars. On August 6th 1945, Little Boy was dropped on Hiroshima. It caused an estimated 80,000 deaths (excluding the thousands of radiation-related deaths in the following years) and destroyed around 69% of the city's buildings. The first atomic bomb was tested prior to this, however, on July 16th 1945, close to New Mexico. The Trinity Test threw the world into a new atomic age.