Gravel — Grav el, n. [OF. gravele, akin to F. gr?ve a sandy shore, strand; of Celtic origin; cf. Armor. grouan gravel, W. gro coarse gravel, pebbles, and Skr. gr[=a]van stone.] 1. Small stones, or fragments of stone; very small pebbles, often intermixed… … The Collaborative International Dictionary of English
Gravel — For other uses, see Gravel (disambiguation). Gravel (largest fragment in this photo is about 4 cm) … Wikipedia
Powder (substance) — A powder is a dry, bulk solid composed of a large number of very fine particles that may flow freely when shaken or tilted. Powders are a special sub class of granular materials, although the terms powder and granular are sometimes used to… … Wikipedia
Mining — This article is about the extraction of geological materials from the Earth. For the municipality in Austria, see Mining, Austria. For the siege tactic, see Mining (military). For name of the Chinese emperor, see Daoguang Emperor. Simplified… … Wikipedia
river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… … Universalium
Confederate Gulch and Diamond City — Confederate Gulch is a steeply incised valley on the west facing slopes of the Big Belt Mountains. Its small stream drains westward into Canyon Ferry Lake, on the upper Missouri River Valley near present day Townsend, Montana. In 1864 Confederate … Wikipedia
TGV track construction — LGV construction is the process by which the land on which TGV trains are to run is prepared for their use, involving carving the trackbed and laying the track. It is similar to the building of standard railway lines, but there are differences.… … Wikipedia
Silicon — Not to be confused with the silicon containing synthetic polymer silicone. aluminium ← silicon → phosphorus C ↑ Si ↓ Ge … Wikipedia
Naval artillery in the Age of Sail — The cannon shot (c. 1680), painted by Willem van de Velde the Younger Naval artillery in the Age of Sail encompasses the period of roughly 1571 1863: when large, sail powered wooden naval warships dominated the high seas, mounting a bewildering… … Wikipedia
List of coalition military operations of the Iraq War — Operation Aloha redirects here. For the band, see Operation Aloha (band). Nordlicht redirects here. For the Kriegsmarine ship, see SS Nordlicht. Operation Falcon Freedom redirects here. For the United Nations Security Council Resolution 1973… … Wikipedia
