METALLURGICAL PRACTICE, 



41 



stamps and one of thirty. This condition of things is the result of 

 the gradual development of the mines and the wish of the manage- 

 ment to be sure of their mine before committing themselves to a big 

 capital expenditure. It affects the cost of milling unfavourably, as 

 the supervision and labour required to run several independent mills 

 is of course more than would be required for one large mill. The 

 decentralization of steaming and motive plant is also undesirable. 



On the Mysore property, where a few years ago there were 

 three stamp mills and three Wheeler pan mills for the treatment 

 of tailings, there has recently been a complete and successful re- 

 organisation; two of the stamp mills and the three tailings mills have 

 been discarded and a new 120-stamp mill of modern design erected, 



while the third stamp mill has 

 been remodelled. The same 

 process of reorganisation is 

 now taking place on the 

 Champion Reef property, 

 where a new stamp mill with 

 120 heads of i ; 25olbs. is in 

 course of erection, and on the 

 Ooregum property a similar 

 scheme is in contemplation. 



The Mysore 120-head mill 



has 1,0501b. stamps in two 



lines of 60 arranged face to 



face and each operated by 



an independent engine (see 



PI. 4). The stamps are in 



batteries of five, each battery 



having a separate cam-shaft 



and pulley, with a gang-way 



between every set of 10 



Fig. 6. -Mortar-box, Mysore mill stamps. The pattern of 



(1,0501b. stamps). mortar-boxes in use is shown 



Scale i|"=2 ft. in fig. 6. 



