File talk:Silver - world production trend.svg

The data looks like it is from the "World Production" column from the the historical information linked from http://minerals.usgs.gov/minerals/index.html and is in metric tonnes per year. See the "Silver" row from http://minerals.usgs.gov/ds/2005/140/ or http://minerals.usgs.gov/ds/2005/140/silver.pdf Drf5n (talk) 15:56, 11 May 2011 (UTC)