glass-like slag
31Cobalt — This article is about the metal. For other uses, see Cobalt (disambiguation). iron ← cobalt → nickel ↑ Co ↓ Rh …
32Joey Henderson — Infobox soap character colour =Television colour|Shortland Street name = Joey Henderson first = June 20, 2007 episode 3755 portrayer = Johnny Barker residence = El Rancho last = March 5, 2008 episode 3933 March 19,2008 Dream cause = Suicide: Fell …
33Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
34Shaped charge — Sectioned high explosive anti tank round with the inner shaped charge visible …
35Types of concrete — There are many types of concrete, variations of installation, composition, finish and performance characteristics. A highway paved with concrete …
36Portland cement — is the most common type of cement in general usage in many parts of the world, as it is a basic ingredient of concrete, mortar, stucco and most non specialty grout. It is a fine powder produced by Portland cement clinker (more than 90%), a… …
37Mineral wool — close up. Mineral wool under micr …
38chemical industry — Introduction complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives. Although the chemical industry may be described simply as the industry that uses chemistry and… …
39Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …
40List of British words not widely used in the United States — Differences between American and British English American English …
