The book presents an interesting and statistical report about the Trinity project; a project conducted by the Manhattan Engineer District (MED) that was designed to test and assess the effects of a nuclear weapon. It delivers accurate data on the development of atomic bombs and their tests performed in New Mexico along with the steps taken to manage exposure. This volume details the participation of MED and LASL in Project Trinity, provides critical information, including a description of the Trinity test site, and explains the actions of MED and LASL participants before, during, and after the detonation. This study also examines the radiological safety standards and procedures in effect for the project. Finally, it presents the outcomes of the radiation monitoring program, including information on film badge readings for participants in the task. Contents include: Introduction The Activities at Project Trinity Radiation Protection at Project Trinity Dosimetry Analysis of Participants in Project Trinity