gravel aggregate

Soil compositions of loose sand/gravel aggregates are also ideal for Artillery and Munitions training.

Petroleum and natural gas fields, placer deposits, polymetallic nodules, sand and gravel aggregates, fish, seals and whales can all be found in abundance in the region.

The Atlantic harbors petroleum and gas fields, fish, marine mammals (seals and whales), sand and gravel aggregates, placer deposits, polymetallic nodules, and precious stones.

Such geosynthetic aggregates replace conventional gravel while simultaneously increasing porosity, increasing hydraulic conductivity and eliminating the fine dust "fines" inherent to gravel aggregates which otherwise serve to clog and disrupt the operation of many drainage applications.

The Lockheed Martin Corporation, the world's largest aerospace and military contractor, said yesterday that it would divest itself of its 81 percent stake in Martin Marietta Materials Inc. of Raleigh, N.C., a supplier of sand, stone and gravel aggregates used to build roads and other projects.