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Five powder diffractometers have been interfaced with a time-shared computer, equipped with a comprehensive set of X-ray powder-pattern analysis programs, to facilitate data acquisition and analysis. The disk-oriented line-broadening analysis routine provides estimates of particle size and micro-strain distributions together with estimates of average particle sizes and macro-strains for cubic crystalline systems. All calculations are performed routinely for all samples, providing comprehensive reports at little more effort and expense than that incurred in the routine preparation of d-value and intensity lists.