2 The Kerala Minerals and Metals Ltd. income, the assessment was completed by the ACIT, Circle -1, Kollam (hereinafter called "the AO") vide order dated 21.12.2010 passed u/s. 143(3) of the Income Tax Act, 1961 (the Act) after making disallowance on account of royalty and addition on account of notional interest and disallowance of cost of replacing Rotary Calciner