THE VALUATION OF MINES AND OIL PROPERTIES 259 
TABLE 15. COPPER IN THE UNITED STATES (Continued) 
NORMAL PRODUCTION AND PRICE 
(Normals for ten-year periods) 
(1880-1914) 
Production. : 
T= _ _ Normal production, poor! peice. 
(inclusive). Pons Velue pounds. 225). 
1880-1889 1,466,122,000 $ 192,239,000 146,612,200 $o.131 
1881-1890 1,670,757%7,000 211,597,000 167,075,700 0.127 
1882-1891 1,894,889,000 237,876,000 189,488,900 0.126 
1883-1892 2,156,215,000 259,815,000 215,621,500 0.121 
1884-1893 2,378,849,000 273,805,000 237,884,900 o.115 
1885-1894  2,598,494,000 289,156,000 259,849,400 0.III 
1886-1895 2,813,444,000 308,875,000 281,344,400 0.1I0 
1887-1896 3,112,270,000 341,804,000 311,227,000 0.110 
1888-1897 3,421,121,000 374,768,000 342,112,100 0.110 
1889-1898  3,716,363,000 402,799,000 371,636,300 0.108 
1890-1899  4,053,784,000 477,114,000 405,378,400 0.118 
1891-1900  4,394,786,000 544,759,000 439,478,600 0.124 
1892-1901 4,701,047,000 593,605,000 470,104,700 0.126 
1893-1902  §5,007,584,000 632,197,000 500,758,400 0.126 
1894-1903  5,365,843,000 691,648,000 536,534,300 0.129 
1895-1904 5,813,513,000 764,137,000 581,351,300 0.131 
1896-1905 6,316,384,000 863,887,000 631,638,400 o.137 
1897-1906 6,774,129,000 992,026,000 677,412,900 0.146 
1898-1907 7,149,047,000  I,III,745,000 714,904,700 0.155 
1899-1908 7,565,105,000 1,174,299,000 756,510,500 0.155 
1900-1909 8,089,390,000 1,215,160,000 808,939,000 0.150 
1901-1910  8,563,433,000 1,253,846,000 856,343,300 0.146 
1902-1911 9,058,593,000 1,303,699,000 905,859,300 0.144 
1903-1912 9,642,353,000  1,432,269,000 964,235,300 0.149 
1904-1913 10,168,792,000 1,530,558,000 1,016,879,200 0.151 
1905-1914 10,506,392,000 1,577,896,000 1,050,639,200 0.149