Dr. F. H. Hatch—The World’s Copper Supplies. 37 
thus to attack vast bodies of disseminated ore hitherto untouched, 
especially in the American States of Arizona, Utah, and Nevada. 
Other new producers were Serbia and German South-West Africa ; 
Cuba also started work on its sulphide ores. 
TABLE IIT. 
THe PRODUCTION OF COPPER IN THE NINETEENTH CENTURY, ARRANGED 
ACCORDING TO COUNTRIES (STATISTICS DERIVED FROM Nicot BROWN AND 
TURNBULL’S “ A CENTURY OF COPPER ’’). 
Tons. Tons. Per cent. 
UNITED STATES 5 $ 2,993,540 29°3 
SoutH AMERICA. 
Chile . F i . | 1,886,405 18'3 
Bolivia : ; : 54,210 153 
Peru . : ‘ i 34,135 ‘8 
Venezuela . ; ; 113,850 11 
Total 2 -, |————]_ 2,086,600 20:2 
British Empire. 
United Kingdom . 864,660 85 
Australasia 3 : 470,219 46 
South Africa : : 175,580 IEF 
Canada ; ‘ : 69,870 07 
Newfoundland . $ 46,527 05 
Total ; . |—————___ 1,626,856 16:0 
SPAIN AND PORTUGAL. 1,328,965 12:9 
JAPAN . s : : 604,200 __ 59 
GERMANY 3 : 5 472,520 4-6 
RUSSIA . 5 5 ; 420,920 4:1 
SCANDINAVIA. 
Norway ; : ; 103,500 EGY, 
Sweden 4 gece 106,680 teal 
Total s . 210,180 all 
Mexico : : : 142,360 14 
CUBA . : : 139,880 1:4 
OTHER COUNTRIES . : 211,468 Qh 
Total : : 10,239,489 | 100-0 : 
The production of the present decade will exceed ten million tons, 
that is, it will be more than the whole production of the last century. 
The widespread use of the flotation method of concentration and the 
introduction of new processes for leaching the ores direct, brought 
fresh sources of supply into being at a time when production was 
being greatly stimulated by urgent war demands. With the coming 
of peace, however, a temporary fallin consumption was inevitable, 
and this began to show its effect on production in the year 1919, and 
will be accentuated in the present year (1920). 
It is doubtful, however, whether consumption has reached its 
highest point. The ever-spreading use of electricity for power, light, 
and heat means a per capita increase of consumption throughout the 
world, especially in countries such as Russia and China, where 
hitherto electricity has not come into general use. 
