Huge equipment moved millions of tons of rock and sand.

VOA: special.2009.08.12

The ash clouds include particles of rock, glass and sand that can get into an aircraft's engine and cause it to stall.

VOA: standard.2010.04.17

The next day, they realized that the sand and natron under the fire had melted then cooled into glass.

VOA: special.2009.09.16

They drill down to the shale, then go sideways and inject high-pressure water, sand or other material into the rock.

VOA: special.2009.10.23

They knew that the black line was formed by trees, and the white line was the sand.

VOA: special.2010.03.06

It lies between sand hills covered with pine trees and rich farmland near the Mississippi River.

VOA: special.2010.01.03

Portland cement is a material that holds together the sand and crushed stone in concrete.

VOA: special.2009.12.01

The soil should be full of loam, a mixture of sand, silt,clay and organic material.

VOA: special.2009.04.07

The long,brownish red wall protects the white sand and coastal grasses from the sea.

VOA: special.2009.06.01

Hawaii wants to re-invent itself as more than a "sun,sand and surf destination,"

VOA: special.2009.03.02

For example,some plants grow taller and their roots grow deeper into the sand.

VOA: special.2010.01.04

Driven by strong winds, the sand moves and covers everything in its path.

VOA: special.2010.01.04

For example,it says climate change and land use are expected to increase desertification worldwide, increasing the risk of sand and dust storms.

VOA: standard.2009.03.23

Clearing the soil, arranging tons of sand colored rocks and then planting everything took nearly a month.

VOA: standard.2010.08.09

Naturally it's called Four Corners. Nearby,you'll find the Painted Desert with sand of many colors, and the world's largest site of petrified prehistoric rock.

VOA: standard.2010.03.22

This plant turns debris from buildings - many destroyed by Israeli air strikes - into sand and gravel that is then turned into cinder blocks for building.

VOA: standard.2010.06.16

The actress,who was nominated for an Oscar for the 2003 feature film House of Sand and Fog, thanked her family, and the cast and crew of the four-episode series.

VOA: standard.2009.09.21

Engineers have found that wetlands, grassy fields and soil or sand filters can take in stormwater with different levels of pollution and release water with a relatively constant cleanliness.

VOA: standard.2010.08.04

The authorities have declared large stretches of normally white-sand beaches along the popular surf region of the Sunshine Coast a disaster zone, as well as Moreton and Bribie islands, which are national parks.

VOA: standard.2009.03.13

In the report, called "Heads in the Sand", the group says a serious decline in the supply of oil coupled with increasing demand and few new projects planned, means the world needs to move away from oil.

VOA: standard.2009.10.20