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



veins on other sections of the mine. The mine is worked entirely 

 by primitive hand methods. 



A few miles to the south of Medaw Kanbay, a wolfram-bearing 

 quartz vein was located in a mangrove swamp within tidal limits 

 in 1918, and although this caused a rush of prospectors to the 

 neighbourhood it is doubtful i the discovery is of any economic 

 interest. 



Kanbauk.— The Kanbauk mine of the Kanbauk (Burma) "Wolfram 

 Mines, Limited, is the most important one of the Coastal Range 

 section, and is situated near the southern end of the Heinze Basin. 

 Alluvial cassiterite deposits have been worked sporadically on the 

 leased area and in the district around it from an unknown anti- 

 quity, but the introduction of modern European methods only 

 dates from the year 1910, when a prospecting license over 

 an area of 7 square miles was granted to Col. Radclift. In 1913 

 the property was incorporated by Radclift' & Co., Ltd. Later 

 a mining lease for a period of 30 years was granted and in 1917 the 

 company was reconstructed under its present title with an issued 

 capital of Ks. 21,000.000 in shares of Rs. 15 each and Rs. 7,50,000 

 in convertible debentures. 



Since the commencement of operations the outputs have been 

 as follows : — 



Year. 



Mino ore. Sluicing. Total." 



1011 . 



1912 . 



1913 . 



1914 . 



1915 . 



1916 . 



1917 . 



1918 . 



Tons. 



206-75 

 254-75 

 i 86-75 

 1 70-50 

 [55-85 

 91-18 

 104-2.-) 



Tons. 



37-00 

 101-75 

 249-50 

 266-51 



272-47 



Tons. 

 260 



206-75 



254-75 



123-75 



172-25 



305-50 



357-69 



376-72 



The approximate average composition of the concentrates for 

 the past few years has been roughly W0 3 57 per cent. Sn. 10 per 

 cent, and Bi. 1-5 per cent. 



