BUZZ-Kaz Minerals: Weakness in Kazakh's tenge boosts stock
** Copper miner's shares up 8.4 pct, top midcap gainer, after the Kazakh tenge weakens against the dollar
** Kazakhstan's tenge currency was trading at 197.07-197.12 to the dollar on the interbank market on Wednesday
** Fall in currency would help Kazakh co's cost base
** "Weakening of the Kazakh tenge is helping the stock today", company spokesman says
** Stock leading FTSE 350 Mining Index, which is dragged down by Glencore (Xetra: A1JAGV - news) and Lonmin (LSE: LMI.L - news)
** Best day for stock in nearly 4 mths in decent volumes,
** Stock touched record lows on Tuesday as Credit Suisse (Other OTC: CDSSF - news) cut PT and copper continued in freefall (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)