US concern over China nuclear build-up after new silos report Toggle share menu Advertisement US concern over China nuclear build-up after new silos report Military vehicles carrying DF-5B intercontinental ballistic missiles travel past Tiananmen Square during the military parade marking the 70th founding anniversary of People's Republic of China, on its National Day in Beijing, China, Oct 1, 2019. (File photo: REUTERS/Jason Lee) 28 Jul 2021 10:34AM Share this content Bookmark WASHINGTON: The Pentagon and Republican congressmen on Tuesday (Jul 27) aired fresh concerns about China's build-up of its nuclear forces after a new report saying Beijing was building 110 more missile silos. An American Federation of Scientists (AFS) report on Monday said satellite images showed China was building a new field of silos near Hami in the eastern part of its Xinjiang region.