BUZZ-Gold miners: Shares fall as metal price drops
** Gold miners' U.S.-listed shares down 2.0-7.5 pct
** Gold price slides as much as 1.8 pct after opinion poll shows weaker support among Swiss voters for referendum that would force central bank to boost gold reserve
** Spot gold down 0.3 pct at $1,193.15 an ounce as of 12.31 p.m. ET (1731 GMT), off low of $1,175.50
** Harmony Gold Mining Co Ltd's shares down 7.5 pct at $1.73, AngloGold Ashanti Ltd down 5.8 pct at $9.60
** Barrick Gold Corp down 3.1 pct at $12.80, Iamgold Corp down 1.7 pct at $2.38
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