Table 5.--Yearend primary magnesium prices
                                                       (Dollars per pound)
                               -------------------------------------------------------------
                                     Year       Yearend                  Year        Yearend
                                                  price                               price
                               -------------------------------------------------------------
                               1915-----------     5.03            1953-----------     .2700
                               1916-----------     4.13            1954-----------     .2800
                               1917-----------     2.02            1955-----------     .3250
                               1918-----------   1/1.81            1956-----------     .3525
                               1919-----------     1.83            1957-----------     .3625
                               1920-----------     1.60            1958-----------     .3625
                               1921-----------     1.60            1959-----------     .3625
                               1922-----------     1.60            1960-----------     .3625
                               1923-----------     1.25            1961-----------     .3625
                               1924-----------     1.07            1962-----------     .3625
                               1925-----------      .86            1963-----------     .3625
                               1926-----------      .80            1964-----------     .3625
                               1927-----------      .68            1965-----------     .3625
                               1928-----------      .55            1966-----------     .3625
                               1929-----------      .57            1967-----------     .3625
                               1930-----------      .48            1968-----------     .3625
                               1931-----------      .30            1969-----------     .3625
                               1932-----------      .29            1970-----------     .3625
                               1933-----------      .28            1971-----------     .3625
                               1934-----------      .26            1972-----------     .3725
                               1935-----------    2/.26            1973-----------     .3825
                               1936-----------      .26            1974-----------     .7500
                               1937-----------      .30            1975-----------     .8200
                               1938-----------      .30            1976-----------     .9200
                               1939-----------      .30            1977-----------     .9900
                               1940-----------      .27            1978-----------    1.0100
                               1941-----------      .23            1979-----------    1.0900
                               1942-----------      .23            1980-----------    1.2500
                               1943-----------      .21            1981-----------    1.3400
                               1944-----------      .21            1982-----------    1.3400
                               1945-----------      .21            1983-----------    1.3800
                               1946-----------      .21            1984-----------    1.4800
                               1947-----------      .21            1985-----------    1.5300
                               1948-----------      .21            1986-----------    1.5300
                               1949-----------      .21            1987-----------    1.5300
                               1950-----------      .25            1988-----------    1.6300
                               1951-----------      .25            1989-----------    1.6300
                               1952-----------      .27            1990-----------    1.4300
                               -------------------------------------------------------------
                                 1/From 1918-34, 99%-pure magnesium bars.
                                 2/From 1935-90, 99.8%-pure magnesium ingot.

                                 Sources:  Producers' average selling prices (1915-34),
                               Engineering and Mining Journal (1935-56), and American Metal
                               Market (1957-90).