In this cross-cut centre-country is cut 60 feet west from the level. At 
126 feet west of the level is a “ back ” dipping west and driven on north 
for 70 feet. There is 6 inches of quartz on this “ back.’ 5 At the end of 
this level is a rise which communicates with the whip shaft by means of a 
ladderwav of 150 feet in length. 
At 230 feet from the surface in the whip shaft and 170 feet north of 
the shaft, a level is being driven. Centre-country is 20 feet west of the whip 
shaft. Quartz mixed with mullock occurs in centre-country at the northern 
end of the workings, but in the level it is not payablv auriferous. Overhead 
20 feet, the quartz is being stoped and sent to the crushing plant, and the 
last crushing, 56 loads, gave 22 ozs. 13 dwts. of gold—nearly half an 
ounce to the ton. 
This mine is quite isolated and is several miles away from any other. 
It lies 3 miles to the east of the richly auriferous Bendigo tract. The 
nearest productive mines to the east are the Linda and surround¬ 
ing mines at Lyall, 8 or 9 miles away. The Linda group of reefs occurs 
very high up in the Ordovician series, probably well up in the Castlemaine 
zone; in fact they are the highest ridges of the auriferous zone, because 
there are few places where any alluvial gold deposits occur, and when they 
do occur they are directly derived from the reefs being worked. 
The Sedgwick reefs also are very high up in the series, probably the 
topmost beds of the Castlemaine zone. Just where the lowest beds are 
exposed at the surface, that is along the anticline, the reefs carry a little 
gold. 
From the surface of this mine down to the more productive Bendigo 
zone, there is a great thickness of intervening beds, and the established 
character of the reefs in the Castlemaine zone is that the gold occurs 
irregularly; occasionally in rich patches, but on the whole the yields are 
unsatisfactory and not profitable, at any rate in the higher part of that 
zone. The average grade in reefs of the Castlemaine zone is low and the 
only chance of making a margin of profit is by reducing the cost to a 
minimum. In the case of this mine the only direction in which prospecting 
operations have any possibility of being useful is downwards on the centre- 
country, but the depth may be very great. 
The manager furnishes the following figures : — 
Tons of quartz crushed to date ... 8,381 
Total gold obtained to date ... ... 3,274 ozs. 1 dwt. 
Amount expended ... ... ... ^25,000 
[Report sent in i.y.oyS 
THE REDESDALE GOLD-FIELD. 
By E. J. Dunn , F.G.S., Director , Geological Survey. 
Lyall is 6 miles north of Redesdale Railway Station and about 600 feet 
above sea-level. The country rock is Ordovician and high up in the series, 
apparently the higher portion of the Castlemaine zone. The rocks consist 
of very coarse siliceous grits, grey and yellow sandstones, and slate beds 
sandstones predominate. 
