slag concrete block
11railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
12technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
13metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …
14Ometepe (archaeological site) — Ometepe Island is an important archaeological site, located in the Lake Nicaragua in the Republic of Nicaragua, administratively belongs to the Rivas Department. Its name derives from the Nahuatl words ome (two) and tepetl (mountain), meaning two …
15Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… …
16Century III Mall — Location 3075 Clairton Rd. (PA 51) West Mifflin, Pennsylvania 15122 Opening date 1979 Developer Edward J. DeBartolo Corporation Management Jones Lang LaSalle No. of stores and services 110 …
17Oxy-fuel welding and cutting — Oxyacetylene redirects here. For the song, see Cubanate. Side of metal, cut by oxygen propane cutting torch …
18Installing building insulation — Due to the variety of building insulation materials available and the various building elements that may require insulation, there are a number of ways of installing building insulation.Where to insulateWhere to insulate depends on where your… …
19Rammed earth — The ruins of a Han Dynasty (202 BCE – 220 CE) Chinese watchtower made of rammed earth at Dunhuang, Gansu province, at the eastern end of the Silk Road …
20Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
