hard rock concrete
51Rogers Centre — SkyDome redirects here. For other uses, see SkyDome (disambiguation). Not to be confused with Rogers Arena, an indoor sports arena in Vancouver, also named after Rogers Communications. Rogers Centre …
52Music of the United Kingdom (1970s) — This article is about British popular music of the 1970s. For Classical music, see Classical music of the United Kingdom. 1970s in music in the UK Number one singles Number one albums Best selling singles Best selling albums Summaries and charts… …
53Roman technology — is the engineering practice which supported Roman civilization and made the expansion of Roman commerce and Roman military possible over nearly a thousand years. The Roman Empire had the most advanced set of technology of their time, some of… …
54Arch-gravity dam — Arch gravity Hoover Dam Architectural Plans An arch gravity dam, curved gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. It is a dam that curves upstream in a narrowing curve that directs most of… …
55Water well — Village pump redirects here. For information on Wikipedia project related discussions see Wikipedia:Village pump. Water well at the Wald monastery in Germany. A water well is an excavation or structure created in the ground by digging, driving,… …
56India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
57Engineering Projects — ▪ 1995 Introduction BRIDGES Notable Engineering Projects(For Notable Engineering Projects in work, see Table (Notable Engineering Projects).) As the decade of the 1990s reached its midpoint, the limits to bridge design were being… …
58Yankee Stadium — This article is about the stadium that opened in 2009. For the original stadium formerly located across the street, see Yankee Stadium (1923). Yankee Stadium …
59Deep Purple — This article is about the rock band. For the song, see Deep Purple (song). For their eponymous third album, see Deep Purple (album). Deep Purple Deep Purple in 2004. L R: Roger Glover, Ian Paice, Ian Gillan, Don Airey and …
60Dublin Port Tunnel — Dublin Port Tunnel, southbound entrance, December 2006 …
