Rock and gravel, I believe.

It can rest still and deep in huge caverns, or it can snuggle in the little crevices of rock and pebble.

In the cities they work with sand, gravel and other aggregates that go into construction materials.

There is no island that does not offer at least some materials, such as sand, gravel and stone, for construction.

A geological formation consists of naturally occurring materials, either consolidated or unconsolidated, such as rock, gravel and sand.

In 1961, the Martin Company merged with the American Marietta Corporation, a large sand and gravel mining company, forming the Martin Marietta Corporation.

They are the sites of major activities such as those involving ports and terminals, sewage treatment plants, electric power generation, non metallic (particularly sand, gravel and stone) mining and tourism.

Economic activities, notably nearshore fishing and harvesting of aquatic plants, tourism and non metallic minerals (particularly sand, ground and stone) mining, will provide major sources of growth to most SIDS in the short and medium terms.

Provision is made for sand, gravel, cement, corrugated galvanized sheets, timber, paint and assorted hardware for the construction of paths, walkways, access roads, parking lots temporary ablution kitchen cooking facilities at a rate of 250,000 per month ( 1,500,000).

Hesco bastion wall is a sophisticated patented type of interlinking sectional hollow wall made of wire mesh panel and geotexite cloth, which is then filled with soil, mud, slurry, sand, gravel or any fluid solid matter.

A geoglyph is a large design or motif (generally longer than 4 metres) produced on the ground and typically formed by clastic rocks or similarly durable elements of the landscape, such as stones, stone fragments, live trees, gravel, or earth.