I have 38 years of experience, and specialize in the field of general physics, nuclear physics, biophysics and geophysics with specific knowledge in the areas of atomic-resolution electron microscopy, seismic data processing and geospatial modeling. I have published on such topics as nuclear instrumentation, seismic multiple attenuation and atomic-resolution electron microscopy. I have testified on geospatial modeling, volumetric computation of irregular geologic regions and volume of excavatable material.