retaining
81Dam — This article is about structures for water impoundment. For other uses, see Dam (disambiguation). Hoover Dam, a concrete arch gravity dam in Black Canyon of the Colorado River. Lake Mead in the background is impounded by the dam …
82Countercurrent exchange — Counter heat current exchange: Note the gradually declining differential and that the once hot and cold streams exit at the reversed temperature difference; the hotter entering stream becomes the exiting cooler stream and vice versa.… …
83José Nápoles — Infobox Boxer name=José Nápoles imagesize= realname=José Ángel Nápoles nickname=Mantequilla weight=Welterweight height=5 7 1/2 reach=28 1/2 nationality=flagicon|Cuba Cuban birth date=birth date and age|1940|4|13 birth place=Santiago, Cuba death… …
84Idar-Oberstein — Schloss Oberstein, castle on the hills above Oberstein …
85Dry stone — 17th century dry stone wall at Muchalls Castle, Scotland …
86Ghana Airways — was an airline based at Kotoka International Airport, Accra, Ghana. All operations ceased in 2004 and the company was placed into liquidation. Ghana now has a new national airline, Ghana International Airlines, a partnership between the… …
87Castle Village — is a cooperative apartment complex located in the Hudson Heights neighborhood of the Washington Heights area of New York City. The buildings are one of many resident owned apartment buildings in Hudson Heights. Most Castle Village apartments… …
88Stone wall trees in Hong Kong — Masonry wall trees refer to trees grown from openings in masonry stone retaining walls. In alleviating harzards from landslides, many slopes adjacent to main roads and developments on Hong Kong Island in Hong Kong needed to be secured. Between… …
89Internal audit — Accountancy Key concepts Accountant · Accounting period · Bookkeeping · Cash and accrual basis · Cash flow management · Chart of accounts  …
90Deep foundation — A deep foundation installation for a bridge in Napa, California, United States …
