Occupational Dose Evaluation in Support of the Development of
October, 2012
Rare Element Resources, Inc. Bear Lodge Project
4
Figure 1.2 shows nominal penetrating capabilities for each type of radiation with different
material types. Neutrons are shown in Figure 1.2 but are not an important particle for radiation
doses from NORM and will not be discussed in this report.
Figure 1.2 Penetrating Distances of Different Types of Radiation
