coarse cement
41Asphalt concrete — Asphalt concrete. As shown in this cross section, many older roadways are …
42Plasterer — A Plasterer is a tradesman who works with plaster, such as forming a layer of plaster on an interior wall or plaster decorative moldings on ceilings or walls. The process of creating plasterwork, called plastering, has been used in building… …
43Deep foundation — A deep foundation installation for a bridge in Napa, California, United States …
44congo — /kong goh/, n. congou. * * * Congo Congo:Geography Location: Western Africa, bordering the South Atlantic Ocean, between Angola and Gabon Map references: Africa Area: total area: 342,000 sq km land area: 341,500 sq km comparative area: slightly… …
45Congo — /kong goh/, n. 1. People s Republic of the, a republic in central Africa, W of the Democratic Republic of the Congo: formerly an overseas territory in French Equatorial Africa; now an independent member of the French Community. 2,583,198; 132,046 …
46dolomite — dolomitic /dol euh mit ik/, adj. /doh leuh muyt , dol euh /, n. 1. a very common mineral, calcium magnesium carbonate, CaMg(CO3)2, occurring in crystals and in masses. 2. a rock consisting essentially or largely of this mineral. [1785 95; < F,… …
47Egypt — /ee jipt/, n. 1. Arab Republic of. a republic in NE Africa. 64,791,891; 386,198 sq. mi. (1,000,252 sq. km). Cap.: Cairo. Arabic, Misr. Formerly (1958 71), United Arab Republic. 2. an ancient kingdom in NE Africa: divided into the Nile Delta… …
48roads and highways — ▪ transportation Introduction traveled way on which people, animals, or wheeled vehicles move. In modern usage the term road describes a rural, lesser traveled way, while the word street denotes an urban roadway. Highway refers to a major… …
49Sand — For other uses, see Sand (disambiguation). Close up of sand from the Gobi Desert, Mongolia, showing a surface area of 1 square centimetres …
50Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold …
