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The determination of statics corrections is one of the fundamental problems in seismic data processing. Statics errors lead to loss of resolution and less than optimum interpretation of the seismic data set. The arrival times of refraction events form a data set sufficient to unravel the structure of the near-surface layers of the earth leading to accurate static corrections and enhanced interpretation. This paper introduces modeling methods using refraction arrivals and shows examples of the application to seismic data processing.