432 
MANGANESE DEPOSITS OF INDIA: ECONOMICS, [PaET III : 
workiiig is a mine in the official sense of the term, the operators are not 
required by the Mines Act to submit figures of output and labour for 
that particular working. Consequently, since many manganese quarries 
do not reach a depth of 20 feet until a year or two after the beginning 
of operations, the figures of production from some workings are hable 
for the first year or two to escape inclusion in the ' Mineral Production '. 
This is not universally appUcable, however, for many operators who 
have several deposits already officially declared to be mines, submit 
figures for the whole of their deposits. Another reason for the in- 
accuracy of the official figures of production is that some of the figures 
reported are not true figures of output or ' raisings ', as they are often 
called ; but of the amount of ore despatched to the port of shipment, 
that is of the amount of ' despatches ' or ' railings The figures I give 
in the following tables are fuller than those given in the ' Mineral Produc- 
tion ' because they mclude the output of several deposits not deep 
enough to be called mines. They are, however, only an approximation 
to the true output figures. For not only are there probably several 
small operators of whose existence I am not aware, but some of the 
figures are, to my knowledge, ' raiUngs '. Thus the figures for Jhabua, 
which are the same as those given in the ' Mineral Production', are 
entirely " despatches ' or ' railings '. The reason of their return in 
this form is no doubt the greater convenience of the operators ; and, 
as the deposits are not in British India, the Mines Act does not 
apply, and consequently no objection can be taken to the return of 
the figures in this form. The chief reason for the difierence between 
the figures I give for the output of the Central Provinces, and those 
given in the ' Mineral Production', is a difference in the method of 
returning the output of the Mansar deposit in the Nagpur district. 
During 1900 and 1901 a large quantity of ore was quarried along the 
outcrop of this deposit, which lies along the top of a ridge. This ore was 
a considerable distance from the aerial ropeway that was constructed 
to tap another part of the deposit, and was therefore of no more use to 
the operators than if it had been left in the ground. Consequently 
it was not returned in the output figures for the years when it was ex- 
tracted. But the subsequent construction of graxdty-inclines to tap 
this part of the ore-bed allowed of the shipment of the whole of this ore 
during 1905 and 1906, and it has probably appeared in the mineral pro- 
duction for those years. In the figures I give, suppUed by the manager 
of the Central Provinces Prospecting Syndicate, this ore is entered up 
ill its right place as regards date of quarrying. 
