PRESIDENTIAL ADDRESS. 13 



of our mining industry, the possibility of the opening of new 

 fields, and the conduct of research in connection with the 

 treatment of the more complex ores which up to the present 

 have baffled exploitation on a commercial basis. 



The great question of by-products offers a large field for 

 experimentation in Australia, more especially as regards 

 our coal industry. The gas and coke industries alone afford 

 scope for investigation which would yield invaluable results* 

 This would necessitate the establishment of State and 

 private laboratories which could be used to supplement the 

 labours of the Bureau of Science and Industry. This is a 

 work which will appeal to the members of this Society^ 

 and will meet with the support of the Section of Industry. 



The Department of Mines has directed its energies dur- 

 ing the past year to the examination of mining fields in 

 greater detail, with a view to attracting attention to new 

 possibilities in the legitimate employment of capital. Mr. 

 E. 0. Andrews, Geological Surveyor, has kindly supplied 

 me with the following notes of certain branches of this 

 work, dealing more particularly with his geological survey 

 of the Barrier Ranges Silver-Lead Field and the Copper 

 bearing areas. 



1. Broken Hill District, — The district is being surveyed 

 geologically by the Department of Mines. The main results 

 of the geological survey of the district may be expected to 

 be made known at the end of the present year. The 

 Barrier Ranges, within which are distributed the mines of 

 Broken Hill, consist of a very large land block which has 

 been forced above the low-lying plain associated with it. 

 This block is about 100 miles in length and is tilted in the 

 form of a skillion roof, the abrupt face of the block having 

 a western aspect and running through Corona, Willangra t 

 Mundi Mundi, Umberumberka, and near the Umberumberka 

 Mine. The eastern and southern aspects show a surface 



