Shares of Hindustan Zinc may see some buying, as the London Bullion Market Association added the company’s silver refinery to its 82-strong ‘Good Delivery List’, a leading benchmark for silver bar quality. HZL has satisfied the LBMA as to its ownership, history, production capability and financial standing. It has also passed the association’s exhaustive testing procedures, under which its silver bars were examined by independent referees, the LBMA said on its web site.