Silver futures are leading a broad decline in metals prices, while natural gas prices rose sharply.
Silver lost $1.44 to $29.68 an ounce, a decline of 4.6 percent. Gold, copper and other metals also fell.
Metals fell following a strong report on the U.S. economy, which suggested less need for extra stimulus from the Federal Reserve and a stronger dollar.
The Commerce Department raised its estimate of economic growth in the third quarter to 3.1 percent from 2.7 percent. The dollar rallied on the news.
In other commodities trading, corn futures ended lower following reports of better weather in Brazil. Energy prices ended higher.
WaPo editorial writer about to become very unpopular with #BlackLivesMatter - Hot Air
WWII HEAVY METAL: Granatbuchse GrB-39 Antitank Grenade-Launching Rifle - Bearing Arms - Video
Black Lives Matter & All Lives Matter Both Get it Wrong | RedState
'Terribly cunning': This newspaper's 'shrewd' report easily wins 'headline of the day' [photo]
Nick Adams - Not a Single Illegal Immigrant in 7 Months... In Australia
S. E. Cupp - Blame Liberals for the Rise of Trump
Two Impossible Things That Could Happen in 2016 | Human Events