248 
noo feet below the level, but this cannot be done because there is water 
in the bottom levels of the mine to the south and close to where the winze 
is placed. The lease adjoining the Birthday to the south has been ac¬ 
quired by that company. The shoots at Berringa, south of the Tunnel 
mine, pitch southward. 
The bottom level (No. 12) is 1,270 feet below r the surface. In the 
west cross-cut at 30 feet from the shaft centre country is passed through, 
and west-dipping beds are then cut. At 101 feet west from the shaft 
is a fault dipping w T est. At 155 feet from the shaft a quartz reef occurs 
dipping west at 54 0 . The footwall is smooth, and the quartz reef 
is 21 feet thick and well laminated. A level has been driven north¬ 
ward on this reef for 240 feet. At the north end of the level the reef 
is 5 feet thick, and it dips 71 0 to the west. Southward a level has 
been driven for 608 feet from the cross-cut along the lode. The 
footwall is smooth, and dips 76° to the west. Faults have dis¬ 
turbed, displaced, and crushed the reef along this level. At 460 feet 
from the cross-cut in the south level, a cross-cut has been driven west 
through the reef for 36 feet. In this cross-cut there is a fault dipping 
east that shows at several points on the west side of the reef; at this level 
it occurs on a bed of black slate; in No. 10 level it shows at no feet 
west of the shaft in the west cross-cut; and in No. 12 level it is seen 
in the west cross-cut at 180 feet from the shaft. West of the quartz 
lode the country dips east. At the south end of the cross-cut in the No. 
12 (bottom) level the reef in the face is only a few inches thick. This 
Is no doubt the Birthday reef. At this level in the east cross-cut at 30 
feet from the shaft there is a syncline, but this must be a minor fold; 
from the syncline to the end of the cross-cut the beds dip west. The 
country rock consists of thick beds of slate and sandstone. 
In the present condition of the mine it w r ould be advisable to drive 
northward at the No. 10 level, and southward from the end of the bot 
tom level (No. 12); the former to meet any new shoots that may exist, 
the latter to cut at the No. 12 level the old shoot worked at higher levels. 
The deepening of the shaft is also of great importance, and will be of 
permanent benefit, as this mine is only at the beginning of its career. 
When the shaft is deepened an east cross-cut should be driven so as to cut 
the zone of country in which the large saddle reefs occur at the Tunnel 
mine. 
[14..5.09.} 
THORNTON’S REWARD MINE, BERRINGA. 
By E. ]. Dunn, F.G.S., late Director, Geological Survey. 
This mine is situate about 3 miles from Berringa in a direction about 
S. 30° W. from the town, it is on the west bank of Moonlight Creek, 
and from this mine alluvial gold workings extend down the creek. Ap¬ 
parently the gold was, at any rate in part, derived from the reef now 
being worked. The main shaft is 112 feet deep, and from the bottom a 
cross-cut is driven east 171 feet through slate and sandstone. The country 
dips east for 140 feet from the shaft and then changes and dips west; the 
change is due to a fault, and there is not a synclinal arch. Quarto 
veins were cut at several sites, and the country is very much broken. At 
40 feet from the shaft, the cross-cut passes through the fault that moved 
the reef 12 feet a little south of the winze. A level south from the east 
cross-cut is extended for over 150 feet, and in the bottom near the face 
