As part of the research project, nine farmers were given materials and trained how to build and use a hoop house.

VOA: special.2009.12.22

If finer materials are used, such as cut grass, the depth should be two and a half to seven and a half centimeters.

VOA: special.2009.06.30

Officials say he bought materials to build explosive devices and traveled to New York City on September tenth as part of planning for an attack.

VOA: special.2009.10.17

Other materials such as lime and cement can be added to strengthen the adobe.

VOA: special.2009.01.12

Or it can be made from manufactured materials such as nylon,acrylic and polyester.

VOA: special.2009.11.04

Yarn can be made from natural materials such as cotton, linen,silk and wool.

VOA: special.2009.11.04

This has affected producers of raw materials such as Australia, Brazil and Canada.

VOA: special.2010.05.07

Water and organic materials are necessary for life as we know it.

VOA: special.2010.05.25

The independent group certifies products and services as environmentally friendly through a life-cycle evaluation - looking at the raw materials and the manufacturing process, transportation and recycling of old products.

VOA: standard.2009.03.30

I paid off as much as I could." Zahwe Samouni had little cash left and was unable to find enough construction materials, but she managed to build a two-room cinderblock house.

VOA: standard.2010.01.02