dust-explosion protection
21Secret and special weapons in Showa Japan — This article refer to Plans for the incorporation and development of special or secret weapons in Imperial Japan during the first part of the Showa era, for the Second sino japanese war and World War II, that were originally hidden from public… …
22Leiner Health Products — is a company based in Carson, California, and is one of America s largest manufacturers of vitamins, minerals, herbal nutritional supplements, and generic medications. It was founded in 1973, and is owned by North Castle Partners, a private… …
23Electrical Equipment in Hazardous Areas — Domestic electrical equipment in British homes is made and tested to a British Standard. The aim of the testing is to ensure that the equipment is fairly robust and has no exposed parts that can cause harm to the user. No other protection is… …
24environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
25Space debris — populations seen from outside geosynchronous orbit (GEO). Note the two primary debris fields, the ring of objects in GEO, and the cloud of objects in low earth orbit (LEO) …
26Fallout shelter — A sign pointing to an old fallout shelter in New York City. Nuclear weapons …
27United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
28Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
29Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
30Nuclear fallout — Fallout redirects here. For other uses, see Fallout (disambiguation). Nuclear weapons History Warfare Arms race Design Testing …
