202 BROWN & HERON : GEOLOGY AND ORE DEPOSITS OF TAVOY. 



Mining operations arc considerably hampered owing to lack of 

 water. 



Cassiterite occurs occasionally in the mica pegmatites of Bihar 

 and Orissa, but is of more scientific interest than economic 

 importance. 



DESCRIPTIONS OF TAVOY MINES. 



in the following pages the mines are grouped in accordance 

 with the geological structure of the country, that is to say with 

 the particular granite intrusion to which they owe their origin. 

 Such a method is regarded as more suitable than a purely geographi- 

 cal or alphabetical one would be. Every mine which has produced 

 more than 10 tons of concentrates in any one year since it was 

 opened is referred to, and brief references are made to smaller 

 prospects which possess any points of peculiar interest. 



Some idea of the activity which has taken place in Tavoy may 

 be gathered from the following table, which gives the total number 

 of applications received by Government for licenses or leases to 

 work mineral lands in the district for the past 10 years :— 





1 





21 





665 



1911 



515 









220 





92 





151 





506 





365 





271 



In the following table the producing mines of the years 1916, 

 1917 and 1918 are tabulated according to their outputs :— • 



Production per annum. 



Number of mines. 



Percentage of total 

 production . 



1916. 



1917. 



1918. 



1917. 



1918. 



Under 5 tons 

 Over 5 and under 10 tons 

 Over 10 and under 50 tons . 

 Over 50 and under 100 tons . 

 Over 100 tons . 



58 



18 



19 



7 



5 



74 



18 



25 



9 



6 



70 

 8 



38 

 6 



7 



2-8 



3-2 



160 



17-5 



60-5 



2-5 

 1-5 



24-7 

 11-8 

 59-4 



Total 



107 



132 



129 



... 



... 



