MINING METHODS. 319 



decide wheher water can be led to the places required by means of 

 ditches or flumes. It is presumed of course that the ground has been 

 valued by careful pitting and that there is a sufficient acreage of it 

 available to warrant whatever expenditure may be involved. Most 

 of the larger mines in Tavoy are supplied with water brought by 

 elaborate installations, often from considerable distances, and as 

 the industry expands an increased use is bound to be made of " water 



rights." 



If a gravity supply is out of the question resource must be made 

 to pumping, and by this means to lift the volume of water required 

 from some more or less permanent supply. There are many small 

 installations of this kind at work and larger schemes are in contempla- 

 tion. Thus at Hermyingyi, according to G. N. Marks, " One 

 is being worked out to lift 200 cubic feet of water per minute to a 

 height cf 920 feet to command an extensive area of rich eluvial. 

 Similar ground this wet season (1917) is yielding 117-J- viss per 

 month (=423 lbs.), per cubic foot of water supplied." Mr. Marks 

 also gives details of smaller pumping installations already at work. 

 One of these is at the Kalonta mine, where two pumps lift river 

 water 50 and 100 feet respectively. " The former is driven by an 

 oil engine burning kerosene and the latter by a semi-Diesel engine 

 burning liquid fuel delivering water on to ground impossible to get 

 at with water races at present levels. These enabled wolfram 

 concentrates to be won at an all-in cost landed in Tavoy godown of 

 Rs. 1-6-0 per viss ( = £57 per long ton). 1 The volume of water lifted 

 was 22,000 gallons per hour and the cost of the two pumps erected 

 Rs. 16,033. In August 1917, 9 tons of concentrate were won with 

 the water from these pumps. " 2 



Another small but interesting pumping scheme which demons- 

 trates how circumstances can be adapted to meet particular cases. 

 and how profits can be made even under adverse conditions, is also 

 given by the same writer. In 1913 a pump was erected to lift 

 water to the top ot Kadwe Hill from the Maungmeshaung stream— 

 a height of 700 feet and a pipe line one mile in length. " The 

 volume of water lifted was never more than 60 gallons a minute, 

 and owing to the difficulties with the plant, troubles in getting spare 

 parts from England in war time, the efficiency of the pump was much 

 reduced and the supply fell to 20 gallons per minute ; yet six separate 



1 Taking Re. l — ls. 4d. 

 »G. N. Marks (18), p. 20. 



