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Santa Fe Opera

(Encyclopedia) Santa Fe Opera, summer opera festival held outside Santa Fe, N. Mex., founded 1957. Featuring outstanding young singers and musicians, it presents a wide variety of operas from the…

Abubakar, Abdulsalam Alhaji

(Encyclopedia) Abubakar, Abdulsalam Alhaji, 1942–, Nigerian military officer and political leader, b. Minna, Niger State. He served in the Nigerian air force (1963–67) and army (1967–99), achieving…

Open University

(Encyclopedia) Open University, headquartered at Milton Keynes, England; founded 1969 as the Univ. of the Air. In 1971 a distance learning program was begun that now consists of correspondence…

Oxnard

(Encyclopedia) OxnardOxnardŏkˈsnärd [key], city (1990 pop. 142,216), Ventura co., S Calif., on the Pacific coast; inc. 1903. Its economy, formerly based on agriculture, mining, and nearby military…

flotation process

(Encyclopedia) flotation process, in mineral treatment and mining, process for concentrating the metal-bearing mineral in an ore. Crude ore is ground to a fine powder and mixed with water, frothing…

Fairbanks

(Encyclopedia) Fairbanks, city (2020 pop. 32,515), Fairbanks North Star Borough, E central Alaska, on the Chena River near its confluence with the…

Afinogenov, Aleksandr Nikolayevich

(Encyclopedia) Afinogenov, Aleksandr NikolayevichAfinogenov, Aleksandr Nikolayevichəlyĭksänˈdər nyĭkəlīˈəvĭch əfēˌnəgyĕˈnəf [key], 1904–41, Russian playwright. In his early plays he wrote of labor…

calcination

(Encyclopedia) calcinationcalcinationkălˌsənāˈshən [key], in metallurgy, process of heating solid material to drive off volatile chemically combined components, e.g., carbon dioxide. It is sometimes…

Yamamoto, Isoroku

(Encyclopedia) Yamamoto, IsorokuYamamoto, Isorokuēsōˈrōk&oomacr;ˌ [key]Yamamoto, Isoroku yämäˈmōtō [key], 1884–1943, Japanese admiral in World War II. He headed the combined fleet in 1941 and was…

Tikhonov, Viktor Vasilyevich

(Encyclopedia) Tikhonov, Viktor Vasilyevich, 1930–2014, Soviet and Russian ice hockey player and coach, b. Moscow. As a defenseman (1949–63), he won four national championships (1951–54) with the…