Mohave County miner and our mineral wealth., 1920-11-27
MINERAL OUTPUT OF NATIONS MINES OFFICIALLY RECORDED
 BY J. s. BUREAU OF MINES

[ in 1913 Mexico produced T0,70@,S2S troy ounces of silver; 1914, 27,546,752 ounces; 1915, 39,57O,151 ounces; 1916, 22,S3S, 400 ounces; 1917, 35,OO0,0OO ounces; 1918, 62,517,00O ounces. The output for 1919 is estimated at about ! 5S, 100000 ounces and about 55,000, ,00O for 1920.
 Copper Output.
 The mine production of copper in the United States in 1908 was approx imately 950,OOO,0OO pounds. This in creased to 1,4SS,071, ,52S pounds in 1915 and reached ZOOS, ,S73,312 in 1916 due to war activities. The output was 1895 ,434,349 pounds in 1917, 1,910,- O22,S41 pounds in 1918, and approxi- mately 1,315,0O0,0OO pounds in 1919. The production has been considerably reduced during 1920 because of re- action in both price and demand con- .sequent upon postwar conditions. The progress of reconstruction is, however, expected to bring about a great improvement over conditions that now prevail.
 Lead and Zinc
 The production of lead in the United States in 1910 amounted to 375 ,402 short tons, valued at $33,035, ,376. It gradually increased to 552,22S tons, valued at $76,2o7, ,0O0 in 1916, and the 1917 production of 54S,450 tons was valued at $91 1888. .0OO, showing much higher price than previously. In 1918 the production was 539,905 tons, val ued at $76,667 ,000, and in 1919 it de- clined to 424,43 tons, valued at $44,- 99O,OOO. The ratio of decline in pro- duction and price of lead during 1920 has closely Allowed that of copper, and for the same reason.
 Zinc has been close ally with lead, in both production and price, although varying somewhat in the general aver age. In 1910 the output of the United States was 252,470 short tons, valued at $27 7,267,732. This gradually in- creased until it reached 564 ,33S tons in 1916, valued at $15l ,243,O0O; the production was greater in 1917, being 5S4, 597 tons, but the value was less, being $119,25S,O00. Since then the output and value have decreased, the 1919 production being 452,272 tons, valued at $66,O32, ,000. The 1920 production will show a decrease cor responding to that of copper and lead. War Minerals
 The so-called war minerals, such as tungsten, manganese, chrome, anti mony, quicksilver, vanadium, etc, reached their peak in both production and price during the progress of the war, and have rapidly subsided, al ' though not to pre-war status.
 Iron leads all other metals in quan- tity and value of production. In 1914 the value of pig iron shipped from blast furnaces in the United States was $29S, TIT ,429, lower figure than for number of years previous The production increased to $401 ,409, ,604 in 1915, $663, ,47s,11s in 1916, $l,O53,- 785,975 in 1917, reached its peak at $1,180,759,565 in 1918, and declined to $S09, ,246,000 in 1919.
 The value of the production of coal in the United States in 1915 was $6S6- 691 ,1S6, representing 531 ,619,4S7 tons. The price of coal increased more rap idly than the production, the output of 67S,211 ,904 tons in 1918 being val ued at $1,S2S, ,290,2S7, and the produc- tion of 544 4,263 ,00O tons in 1919 being valued at approximately $1 800 ,O0O,- 900.
 Petroleum Production.
 Petroleum production has made the most remarkable strides of any in dustry in the history of the world. The total production of the United States prior to 1908 was, according to statistics of the IL S. Geological sur vey, 1,SO6,60S, ,463 barrels with total value of $1, 657, 113,275. In 1910 the production was 2O9,557, PAS barrels valued at $127, 7,S9O,6SS, which increas- ed in 1919 to 377,719,O0O barrels, valu- ed at approximately $775 100000, which does not include oil consumed in operations on leases. It is estimated that the production of 1920 will be ap- proximately 402,OOO,O0O barrels with an approximately total value of 1O,2OO 100000, computed on the higher market price, which has been steadily increasing. The estimated consump- tiOn of crude oil in the United States for 1920 is placed at 463 3,00O,OOO bar rels, which leaves a national shortage of 34,000,000 barrels which must be supplied from reserves and imports
 In strong contrast to many other products at the prtsent time, the demand for crude oil and it's pro- ducts is steadily increasing; the oil reserves are constantly decreasing and the market price rapidly advancing, notwithstanding the intensive efforts IL | I 4