Chap. XXTIT.] classificatiox of deposits. 
As examples of the foregoing divisions the following may be 
mentioned : — 
A. (a) The Kajlidongri deposit, .Jhabua State : many of those of the 
Central Provinces, such as Kandri, Mansar, Balaghat, 
Manegaon. 
A. (b) Nearly all the deposits of the Sandur Hills and Mysore, and 
most lateritic deposits. 
B. (a) Many of the deposits of the Central Provinces, such as Kode- 
gaon and Waregaon ; a large number of those of Vizagapa- 
tam, such as Kodur and Perapi. 
B. (b) Several of those of Mysore, such as those near Karelcurchi. in 
the Tumkux district. 
There are of course many deposits that do not fit conveniently into this 
classification. Thus Kumsi in the Shimoga district, Mysore, occurs on the 
slope of a hill. It can be put into A. (&), however. 
The chief difference caused by the situation of the deposit is that when 
working on a hill drainage troubles are avoided, if the work is done ration- 
ally, whilst the labour of transporting the ore to the stacking ground can 
be greatly facilitated by the erection of aerial ropeways and inchned planes, 
gravity being the motive power ; see Kandri (Plate 28), Mansar 
(Plate 33), and Balaghat. In this way large quantities of ore often can 
be won for many years from the hiU deposits before quarrying down to 
the level of the surroundiiig plains. On the other hand, in the case of a 
quarry commenced at the level of the plains, as soon as a depth of 20 to 
40 feet is reached, water troubles usually begin, so that extensive 
pumping is required, as at Kodur (Plate 47) and Garbham in the 
Vizagapatam district, and Beldongri and Kacharwahi in the Central 
Provinces (Plate 41). Eventually a depth is reached at which it 
becomes a matter of great diflSculty to quarry the ore, and it is then that 
proper mining operations become necessary if the deposit is not to be 
abandoned, as was done in the case of the Waregaon deposit, in the Xagpur 
district. But in the case of such a deposit as Waregaon, which is imagined 
to have given out at the same time as water troubles prevented further 
work, there seems to be no desire on the part of the miners to ascertain to 
what depth the ore continues, and determine whether it would be worth 
while to try and win the remainder of the deposit by mining it. 
The chief difference between the working of the deposits of groups A. (a) 
and A. (6) is that in the latter case the problem is simply one of removing a 
III I. 
