A patent has been granted jointly to Jawaharlal Nehru Aluminium Research Development and Design Centre (JNARDDC) and NALCO by Controller of Patent for an invention entitled "Determination of calcium in alumina hydrate, calcined alumina and process liquor". Shares of National Aluminium Company Limited was last trading in BSE at Rs. 96.50 as compared to the previous close of Rs. 96.65. The total number of shares traded during the day was 2056960 in over 8377 trades. The stock hit an intraday high of Rs. 101.10 and intraday low of 96.15. The net turnover during the day was Rs. 201894278.00.

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