This is to certify that Shri. N Gopakumaran Nair is known to me for about two years. Shri Nair after doing his Diploma in Mining and Mine Surveying from School of Mines KGF in the year 1975, did his post Diploma Practical training at Nundy Doorg Mine, K.G.F till he joined Hindustan Zinc Limited as a Mining Mate on December 1, 1976. During his service with Hindustan Zinc Limited., at Mochia Mine he has taken keen interest in all activities and had many credits for his sincere and efficient duties. He was associated with many successful major blasting operations in sub-level stopes, blasting over 200 holes and over a tonne of explosives. He had also supervised main haulage work (electric trolley loco) hauling over twelve hundred tonnes of ore in a shift for few months. He had also been associated with long raising (70 mtr. long) by Alimak Raise Climber. He had effectively supervised long hole driiling operations many times more than 60 m per machine shift. Shri N Gopakumaran Nair had a very decent behaviour with all his associates which has been the key for his success. I wish him a very bright carrier and a happy life.