 Including the Pullman B @-@ 29 , a total of 46 Silverplate B @-@ 29s were produced during World War II . Of these , 29 were assigned to the 509th Composite Group during World War II , with 15 used to carry out the atomic bombings of Hiroshima and Nagasaki . An additional 19 Silverplate B @-@ 29s were ordered in July 1945 , which were delivered between the end of the war , and the end of 1947 . By this time only 13 of the original 46 were still operational . Thus , a total of 65 Silverplate B @-@ 29s were made , of which 32 were operational at the start of 1948 . Martin @-@ Omaha produced 57 Silverplate B @-@ 29s . The other 8 were built by Boeing @-@ Wichita . Of these 65 bombers , 31 were eventually converted to other configurations , 16 were placed in storage and later scrapped , and 12 were lost in accidents ( including four of the Tinian bombers ) . The pair of historic , weapons delivery aircraft , named Enola Gay and Bockscar , are today displayed in museums . 
