THE VALUATION OF MINES AND OIL PROPERTIES 206 5 
TABLE 18. ZINC IN THE UNITED STATES (Continued) 
NORMAL PRODUCTION AND PRICE 
(Normals for ten-year period) 
(1880-1914) 
Production. : 
: Normal 
Peden periods - Normal production. a. 
Pounds. Value. age). 
1880-1889 815,304,000 § 38,705,100 81,530,400 $o.047 
1881-1890 896,192,000 42,694,100 89,619,200 0.048 
1882-1891 1,004,338,000 48,047,800 100,433,800 0.048 
1883-1892 1,111,328,000 52,428,100 111,132,800 0.047 
1884-1893 1,195,248,000 55,424,600 119,524,800 0.046 
1885-1894 1,268,816,000 57,289,900 126,881,600 0.045 
1886-1895 1,366,812,000 60,028,000 136,681,200 0.044 
1887-1896 1,444,528,000 62,795,500 144,452,800 0.043 
1888-1897 1,543,808,000 66,511,500 154,380,800 0.043 
1889-1898 1,662,800,000 71,396,500 166,280,000 0.043 
1890-1899 1,803,182,000 80,445,600 180,318,200 0.045 
1891-1900 1,923,588,000 84,833,400 192,358,800 0.044 
1892-1901 2,043,486,000 88,065,500 204,348,600 0.043 
1893-1902 2,182,820,000 94,663,200 218,282,000 0.043 
1894-1903 2,343,594,000 105,084,600 234,359,400 0.045 
1895-1904 2,566,342,000 118,456,800 256,634,200 0.046 
1896-1905 2,794,668,000 136,233,000 279,466,800 0.049 
1897-1906 3,031,058,000 154,075,800 303,105,800 0.051 
1898-1907 3,278,588,000 171,979,400 327,858,800 0.0525 
1899-1908 3,429,288,000 179,523,900 342,928,800 0.052 
1900-1909 3,631,636,000 189,547,300 363,163,600 0.052 
190I-IQIO0 3,888,822,000 206,160,800 388,882,200 0.053 
1902-1911 4,150,420,000 225,859,800 415,042,000 0.054 
1903-1912 4,484,380,000 255,933,400 448,438,000 0.057 
1904-1913 4,840,446,000 276,987,600 484,044,600 0.057 
1905-1914 5:153,878,000 293,346,000 513,387,800 0.057