The American-operated ship carried thousands of tons of agricultural materials for the World Food Program and other aid organizations.

VOA: special.2009.05.27

The effort will help reduce carbon dioxide releases from the Empire State Building by more than one hundred thousand tons a year.

VOA: special.2009.05.22

It stood four to six meters tall, was about twelve meters long, and weighed up to seven tons.

VOA: special.2009.09.01

But in time, huge machines were built that could wash many tons of dirt at a time.

VOA: special.2010.04.25

One scientist estimated that if all the HeLa cells ever grown were gathered together, they would weigh more than fifty million metric tons.

VOA: special.2010.07.21

The United States and Russia signed an agreement to dispose of sixty-eight tons of weapons-grade plutonium.

VOA: special.2010.04.17

Now there are so many,experts say up to twenty metric tons a day could be removed with nets ver a period of several years.

VOA: special.2009.12.15

The solar-powered irrigation systems produced an average of nearly two metric tons of vegetables per month.

VOA: special.2010.01.11

"The present canal has a total capacity of about three hundred and forty million tons a year that it can handle, that's the maximum capacity.

VOA: special.2011.08.08

But it threatens more than thirty million tons a year of production in East Africa.

VOA: special.2010.06.08

Boeing and Lockheed Martin have carried tons of satellites into space on their rockets.

VOA: special.2010.04.28

They were equipped with one hundred big guns and tons of supplies.

VOA: special.2009.09.17

And that year they produced three hundred fifty million tons of coal.

VOA: special.2009.03.16

Each year,container ships carry thousands of tons of goods to Baltimore.

VOA: special.2009.10.06