Narayanan [14] was used a novel procedure for estimation of breakage distribution functions of ores from t-family of curves. In this method, the product size distribution can be represented by a family of curves using marker points on the size distribution defined as the percentage passing (t) at a fraction of the parent particle size. Thus, t2 is the percentage passing an aperture of half the size of the parent particle size, t4 is one quarter and t10 is one-tenth of parent particle size. Narayanan and Whiten [15] have proposed empirical equations for relating the reference curve data t10 with the impact energy.