Experienced Chief Scientist and Deputy Director. Nuclear detection expert. Advanced Technology Developer. Over four decades of experience developing technology and methods for addressing the clandestine nuclear attack issue, quantum sciences, AI applications and advanced approaches to multiple problems. The subdirectories of this page archive a number of short papers by Robert August on the basics of detecting weak radioactive sources in the environment, most significantly SNM (special nuclear material) and nuclear devices. Dr. August has over four decades of experience in this field and these results are widely recognized and often requested. They are compiled here for easy reference and download.