These returns consist of notarized affidavits attesting to the validity of the accompanying schedules; property schedules detailing personal and, after 1919, real property; and by 1940, recapitulations summarizing the property schedules for each county or taxing district in which the company operated. Related correspondence or Tax Commission calculations are often stapled to the returns. From 1919 through 1937, net proceeds schedules for metalliferous mines showing gross yield minus certain deductions are part of this series. Profit and loss statements or ad valorem work sheets are present for most non-metalliferous extraction companies from the 1970s. The returns were submitted by natural resource extraction companies as the basis of assessment and apportionment of taxes by the Tax Commission. Natural resources assessed include metal mines (e.g. gold, silver, lead) and non-metal mines (e.g. coal, oil, gas, salt, etc.).; From 1910 through 1937, the series is chronological by year, thereunder alphabetical by county, thereunder alphabetical by company name except that San Juan and San Pete counties are listed before Salt Lake county during the period from 1917 through 1919. In 1938, the series becomes chronological by year thereunder alphabetical by company name. In 1962, the series becomes chronological by year thereunder alphabetical by title (based on category of company), thereunder alphabetical by company name.; Historical Note; Research Note; Natural resources annual property returns; 1910; Counties, Beaver-Piute; 1910; Counties, Salt Lake-Washington; 1911; Counties, Beaver-Juab; 1911; Counties, Piute-Summit; 1911; Counties, Summit-Washington; 1912; Counties; 1913; Counties, B-R; 1913; Counties, S-W; 1914; Counties, B-P; 1914; Counties. S-W; 1915; Counties, B-R; 1915; Counties, S-W; 1916; Counties, B-R; 1916; Counties, S-W; 1917; Counties, B-P; 1917; Counties, S-W; 1918; Counties; 1919; Counties, B-P; 1919; Counties, S-W; 1920; Counties, A-R; 1920; Counties, S-W; 1921; Counties, A-R; 1921; Counties, S-Z; 1922; Counties, A-R; 1922; Counties, S-Z; 1923; Counties, A-R; 1923; Counties, S-Z; 1924; Counties, A-R; 1924; Counties, S-Z; 1925; Counties, A-R; 1925; Counties, S-Z; 1926; Counties, A-R; 1926; Counties, S-Z; 1927; Counties, A-R; 1927; Counties, S-Z; 1928; Counties, A-R; 1928; Counties, S-Z; 1929; Counties, A-R; 1929; Counties, S-Z; 1930; Counties, A-R; 1930; Counties, S-Z; 1931; Counties, A-R; 1931; Counties, S-Z; 1932; Counties, A-R; 1932; Counties, S-Z; 1933; Counties, A-R; 1933; Counties, S-Z; 1934; Counties, A-R; 1934; Counties, S-Z; 1935; Counties, A-R; 1935; Counties, S-Z; 1936; Counties, A-R; 1936; Counties, S-Z; 1937; Counties, A-R; 1937; Counties, S-Z; 1938; Mines, A-D; 1938; Mines, E-M; 1938; Mines, N-S; 1938; Mines, T-Z; 1939; Mines, A-D; 1939; Mines, E-M; 1939; Mines, N-S; 1939; Mines, T-Z; 1940; Mines, A-D; 1940; Mines, E-M; 1940; Mines, N-S; 1940; Mines, T-Z; 1941; Mines, A-D; 1941; Mines, E-M; 1941; Mines, N-S; 1941; Mines, T-Z; 1942; Mines, A-D; 1942; Mines, E-M; 1942; Mines, N-S; 1942; Mines, T-Z; 1943; Mines, A-D; 1943; Mines, E-M; 1943; Mines, N-S; 1943; Mines, T-Z; 1944; Mines, A-D; 1944; Mines, E-M; 1944; Mines, N-S; 1944; Mines, T-Z; 1945; Mines, A-D; 1945; Mines, E-M; 1945; Mines, N-S; 1945; Mines, T-Z; 1946; Mines, A-D; 1946; Mines, E-M; 1946; Mines, N-S; 1946; Mines, T-Z; 1947; Mines, A-D; 1947; Mines, E-M; 1947; Mines, N-S; 1947; Mines, T-Z; 1948; Mines, A-D; 1948; Mines, E-M; 1948; Mines, N-S; 1948; Mines, T-Z; 1949; Mines, A-D; 1949; Mines, E-M; 1949; Mines, N-S; 1949; Mines, T-Z; 1950; Mines, A-D; 1950; Mines, E-M; 1950; Mines, N-S; 1950; Mines, T-Z; 1951; Mines, A-D; 1951; Mines, E-M; 1951; Mines, N-S; 1951; Mines, T-Z; 1952; Mines, A-D; 1952; Mines, E-M; 1952; Mines, N-S; 1952; Mines, T-Z; 1953; Mines, A-D; 1953; Mines, E-M; 1953; Mines, N-S; 1953; Mines, T-Z; 1954; Mines, A-D; 1954; Mines, E-M; 1954; Mines, N-S; 1954; Mines, T-Z; 1955; Mines, A-D; 1955; Mines, E-M; 1955; Mines, N-S; 1955; Mines, T-Z; 1956; Mines, A-D; 1956; Mines, E-M; 1956; Mines, N-S; 1956; Mines, T-Z; 1957; Mines, A-D; 1957; Mines, E-M; 1957; Mines, N-S; 1957; Mines, T-Z; 1958; Mines, A-D; 1958; Mines, E-M; 1958; Mines, N-S; 1958; Mines, T-Z; 1959; Mines, A-D; 1959; Mines, E-M; 1959; Mines, N-S; 1959; Mines, T-Z; 1960; Mines, A-D; 1960; Mines, E-M; 1960; Mines, N-S; 1960; Mines, T-Z; 1961; Mines, A-D; 1961; Mines, E-M; 1961; Mines, N-S; 1961; Mines, T-Z; 1962; Mines, A-D; 1962; Mines, E-M; 1962; Mines, N-S; 1962; Mines, T-Z; 1962; Oil & Gas Co's.; 1963; Mines, A-D; 1963; Mines, E-M; 1963; Mines, N-S; 1963; Mines, T-Z; 1963; Oil & Gas Co's.; 1964; Mines, A-D; 1964; Mines, E-M; 1964; Mines, N-S; 1964; Mines, T-Z; 1964; Oil & Gas Co's.; 1965; Mines, A-D; 1965; Mines, E-M; 1965; Mines, N-S; 1965; Mines, T-Z; 1965; Oil & Gas Co's.; 1966; Mines, A-D; 1966; Mines, E-M; 1966; Mines, N-S; 1966; Mines, T-Z; 1966; Oil & Gas Co's.; 1967; Mines, A-D; 1967; Mines, E-M; 1967; Mines, N-S; 1967; Mines, T-Z; 1967; Oil & Gas Co's.; 1968; Mines, A-D; 1968; Mines, E-M; 1968; Mines, N-S; 1968; Mines, T-Z; 1968; Oil & Gas Co's.; 1969; Mines, A-D; 1969; Mines, E-M; 1969; Mines, N-S; 1969; Mines, T-Z; 1969; Oil & Gas Co's.; 1970; Mines, A-D; 1970; Mines, E-M; 1970; Mines, N-S; 1970; Mines, T-Z; 1970; Oil & Gas Co's.; 1971; Mines, A-D; 1971; Mines, E-M; 1971; Mines, N-S; 1971; Mines, T-Z; 1971; Oil & Gas Co's.; 1972; Mines, A-D; 1972; Mines, E-M; 1972; Mines, N-S; 1972; Mines, T-Z; 1972; Oil & Gas Co's.; 1973; Mines, A-D; 1973; Mines, E-M; 1973; Mines, N-S; 1973; Mines, T-Z; 1973; Oil & Gas Co's.; 1974; Mines, A-D; 1974; Mines, E-M; 1974; Mines, N-S; 1974; Mines, T-Z; 1974; Oil & Gas Co's.; 1975; Mines, A-D; 1975; Mines, E-M; 1975; Mines [Kennecott, Cont.]; 1975; Mines, N-S; 1975; Mines, T-Z; 1975; Oil & Gas Co's.; 1976; Mines, A-D; 1976; Mines, E-M; 1976; Mines [Kennecott, Cont.]; 1976; Mines, N-S; 1976; Mines, T-Z; 1976; Oil & Gas Co's.; 1977; Mines, A-D; 1977; Mines, E-M; Eagle & Blue Bell Mining-Kennecott Copper Corporation; 1977; Kennecott Copper Corporation-Monroc, Inc.; 1977; Mines [Kennecott, Cont.]; 1977; Mines, N-S; 1977; Mines, T-Z; 1977; Oil & Gas Co's.; 1978; Mines, A-D; 1978; Mines, E-M; 1978; Mines [Kennecott, Cont.]; 1978; Mines, N-S; 1978; Mines, T-Z; 1978; Oil & Gas Co's.; 1979; Mines, A-D; 1979; Mines, E-M; Eagle & Blue Bell Mining-Kanawha and Hocking Coal and Coke; 1979; Kanawha and Hocking Coal and Coke-Monroc, Inc.; 1979; Mines [Kennecott, Cont.]; 1979; Mines, N-S; 1979; Mines, T-Z; 1979; Oil & Gas Co's.; 1980; Mines, A-D; 1980; Mines, E-M; 1980; Mines [Kennecott, Cont.]; 1980; Mines [Kennecott, Cont.]; 1980; Mines, N-S; 1980; Mines, T-Z; 1980; Oil & Gas Co's.; 1981; Mines, A-D; 1981; Mines, E-M; 1981; Mines [Kennecott, Cont.]; 1981; Mines [Kennecott, Cont.]; 1981; Mines, N-S; 1981; Mines, T-Z; 1981; Oil & Gas Co's.; 1982; Metal Mines, A-K; 1982; Metal Mines [Kennecott, Cont.]; 1982; Metal Mines, L-Z; 1982; Non-Metal Mines, A-K; 1982; Non-Metal Mines, L-Z; 1982; Oil & Gas Companies; 1983; Coal Mines; 1983; Metal Mines, A-K; 1983; Metal Mines, L-Z; 1983; Mines [Amax, Cont.; Kennecott, Cont.; Texasgulf]; 1983; Non-Metal Mines; 1983; Oil & Gas Companies, A-M; 1983; Oil & Gas Companies, N-Z; 1984; Coal Mines; 1984; Metal Mines, A-K; 1984; Metal Mines, L-Z; 1984; Mines [Amax, Cont.; Dragon Consolidated, Cont; Evelyn Ltd., Cont.; Kennecott, Cont.; Texasgulf]; 1984; Non-Metal Mines; 1984; Oil & Gas Companies, A-K; 1984; Oil & Gas Companies, L-Z; 1984; Sand & Gravel Mines
