The modulus of elasticity has primary importance in geotechnical engineering, since it defines the deformability of soil under existing field stresses and applied static loads. Elastic modulus (E_s) is most commonly derived from field tests (plate load test, standard penetration test, and cone penetration test etc.) and laboratory tests (unconfined compression tests, triaxial compression tests). Apart from these common methods, empirical relations may also be used to predict modulus of elasticity from one dimensional consolidation test, when other methods are inapplicable. In this study, this empirical relation is used to estimate modulus of elasticity of copper tailings material stored in a tailings dam.