
U.S. mines produced 80,900 kilograms (2,600,995 troy ounces) of silver in November 2013, a 14% decrease from the 94,300 kg (3,031,815 oz) produced in November 2012, the U.S. Geological Survey reported.
Monthly silver production continued on a downward trend that began in June 2013, the USGS observed.
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http://www.mineweb.com/mineweb/content/en//mineweb-silver-news?oid=237157&sn=Detail
Is it because spot is too low for them to make a profit, or another reason?