60 HAYDEN : AURIFEROUS LOCALITIES IN NORTH COIMBATORE, 



old workings. The soil and ddbris at the outcrop eon,* 

 tains a considerable quantity of gold. Samples from 

 the outcrop of the main reef gave only a trace of 

 gold, and of two small reefs sampled, one gave an 

 average of about 7 dwts. per ton for an average thick- 

 ness of 5 inches ; the other only traces. It might 

 be worth while to undertake some small prospecting 

 operations, provided these could be carried out at no 

 great cost ; an attempt, for example, might be made 

 to clear out any old shafts on the main reef and 

 some cross-cuts might be made through the reef. 

 (£) Porsedyhe mine : a large reef crops out at the surface 

 and has been worked to some considerable extent. 

 Three vertical shafts have been sunk by Mr. Holmes, 

 and cross-cuts made in order to strike the reef : this, 

 however, has not been found, having been probably 

 cut off by a great mass of intrusive pyroxenite. It 

 would seem advisable to sink on the reef itself in 

 preference to continuing expensive work in the 

 pyroxenite. 

 (c) Hadabanatta : this lode contains small quantities of gold 

 but probably not in sufficient quantity to be worth 

 working for that mineral alone. Samples taken from 

 near the surface yield, however, 3 per cent, of copper, 

 and more extensive prospecting operations should be 

 undertaken with a view to proving the value of the 

 lode. 

 3. Old native workings occur also at Kavudahalli, Hosur and 



Dinhalli. Prospecting operations carried on a few years ago near 



Kavudahalli failed to prove the existence of any workable body of 



ore. 



The old workings near Hosur and also those near Dinhalli are 



small and unimportant. 

 ( 66 ) 



