From what you're describing, these kinds of potential exposures would probably be more in line with a level three exposure, which we've heard about from Dr. Daxon, from the capstone study that was carried out. Potential exposure to uranium was categorized in levels of exposure, level one being the most exposed and level three being the least exposed. Just being in the same environment as a depleted uranium shell would either be a level three or even lower than a level three. This level was shown not to cause adverse health effects from this kind of remote exposure.
On March 21st, 2013. See this statement in context.