1923 123.150 
1924 143.259 
1925 - 176.058 
Average from 1923 to 1925 in tons: 147.489 
Although copper ore exists in many places, there are at present only two 
mines at work, namely those of Bor and Majdanpek, both of which are in Serbia. 
The Bor Mines have been exploited by a French company for 25 years. Here 
the pyrites of iron and copper contain up to 69, of copper and some gold (about 
25—30 grams per ton), as well as 120—130 grams of silver to a ton of ore. These 
mines are responsible for practically the whole output of the country. 
The following are the figures of the output of smelted copper: 
Tons 
1919 1.332 
[920 © 2.439 
'921 2.144 
Average from 41923 to 1925 
1922 
1923 
1924 
1925 
Tons 
5.354 
6.838 
8.101 
7.301 
7413 tons. 
IV. Lead 
Most of the lead is in Slovenia, Bosnia and Serbia, but it is mined almost 
exclusively in the MeZice mine in Slovenia. The figures of output are: 
Tons 
Average 1923—1025 
1919 
1920 
1921 
1922 
1923 
1924 
1925 
45.337 
31.717 
50.285 
61.373 
57.194 
64.157 
78.549 
88.503 Louk 
Output of smelted lead : 
Tons 
1919 5.666 
1920 5.099 
1921 4.831 
1922 8.447 
Average from 1923 to 1925 
Tons 
1923 9.260 
1924 11.487 
1925 10.956 
10.568 tons 
The export of lead ore is very small, while the export of smelted metal in the 
years 1923 to 1925 amounted annually to 10.055 tons, or 959%, of the total output.