loose material
41Walking floor — to enter the trailer. The system can quickly unload loose material without having to tip the trailer or tilt the floor as with other dumping systems. Walking floor is registered trademark of Keith Manufacturing, Inc., usually capitalized as… …
42Road slipperiness — or skid resistance is the technical term for the cumulative effects of snow, ice, water, loose material and the road surface on the traction produced by the wheels of a vehicle.cite journal|title=Measuring Road Surface Slipperiness|journal=ASTM… …
43coral reef — a reef composed mainly of coral and other organic matter of which parts have solidified into limestone. [1735 45] * * * Ridge or hummock formed in shallow ocean areas from the external skeletons of corals. The skeleton consists of calcium… …
44History of the Panama Canal — The history of the Panama Canal goes back almost to the earliest explorers of the Americas. The narrow land bridge between North and South America offers a unique opportunity to create a water passage between the Atlantic and Pacific oceans. This …
45Mine exploration — This article is about visiting mines. For searching for minerals, see Mineral exploration. Mine exploration is a hobby in which people visit abandoned mines, quarries, and sometimes operational mines. Enthusiasts usually engage in such activities …
46cotton — /kot n/, n. 1. a soft, white, downy substance consisting of the hairs or fibers attached to the seeds of plants belonging to the genus Gossypium, of the mallow family, used in making fabrics, thread, wadding, etc. 2. the plant itself, having… …
47Cotton — /kot n/, n. John, 1584 1652, U.S. clergyman, colonist, and author (grandfather of Cotton Mather). * * * I Seed hair fibre of various plants of the genus Gossypium, in the mallow family, native to most subtropical countries. The shrubby plants… …
48Drawing — For other uses, see Drawing (disambiguation). Male nude by Annibale Carracci, 16th century Drawing is a form of visual art that makes use of any number of drawing instruments to mark a two dimensional medium. Common instruments include graphite… …
49Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
50Foreign object damage — FOD to the compressor blades of a Honeywell LTS101 turboshaft engine on a Bell 222, caused by a small bolt that passed through the protective inlet screen …
