"X-ray Diffraction as a Means to Study Surfaces" Physics Colloquium, University of Missouri, Columbia, January 1993
"Structures of Clean and Oxidised Molybdenum Surfaces", Seminar, Ecole Polytechnique Fédérale, Lausanne, July 1993.
"X-ray Diffraction from Surfaces" Adriatico Research Conference on Scattering from Surfaces, Trieste, July 1993.
"X-ray Studies of Wet Chemical Reactions at Crystal Surfaces" Symposium on Atomic and Molecular Views of the Electrode-Electrolyte Interface, American Chemical Society, Chicago, August 1993.
"New Fast Kappa Diffractometer for APS Beamlines" Advanced Photon Source Optics Group Weekly Seminar, Argonne National Lab, October 1993.
"Surface Structure Determination using Synchrotron X-ray Diffraction" Workshop on Two Dimensional Semiconductor Research using Synchrotron Radiation, Mitsubishi Kasei Creation Center, Tsukuba, Japan, November 1993.
"What can we learn about surfaces using X-ray diffraction?" Materials Science and Engineering Colloquium, University of Illinois, December 1993