145 
The reef strikes about N. 22 deg. W., and its dip changes from 
westerly to easterly. Where it dips to the west and crosses the eastern 
strata at an angle the stone has been most profitable. 
The main reefs worked in this mine have been the “Eastern” and the 
“ Western,” which have been followed from where Sharp and Barry and 
others worked so profitably. 
The following brief description of the developments down to the 
960-ft. level is given from information supplied by the manager, Mr. Wm. 
Nicholas, senior, and Mr. F. Nicholas, as well as from reference to the 
mine-plans and sections, and my own geological notes. 
From the surface to the 360-ft. level, the underlie of the reef (Western 
Reef) was 60 deg. west. It had a good hanging wall and a broken foot- 
wall. The yield was approximately 26,943 oz. of gold for 51,218 tons of 
ore. Between the 296-ft. and the 360-ft. levels large masses of eastern 
quartz spurs were worked for poor yields. 
From the 366-ft. lervel to the 560-ft. level this reef was nearly vertical 
and unpayable, but between these same levels the “ Eastern Reef ” was 
pay ably mined/the reef underlying 45 deg. west, and the slate and sand¬ 
stone beds dipping east at about 65 deg. 
Just below the 560-ft level the Eastern and Western Reefs junctioned 
and then the combined reef dips east at 60 deg. 
Between the 700-ft. and 800-ft. levels a large break occurred coming in 
from the west. This was seen again cutting the strata just before the 
Western Reef was cut at the 960-ft. level. The reef at this level was much 
disturbed, and contained broken masses of country rock, makes of quartz 
and pieces of dyke rock, the latter, no doubt, derived from the western 
dyke. At this level the Western Reef was practically non-auriferous. 
At each level a wall-like dyke 12 feet wide (termed the western wall) 
was cut. It is nearly vertical from 360 feet to 560 feet and then underlies 
slightly to the east in the lower levels, and is disturbed at the 960-ft. 
level. This rock has been classed with the minettes by Mr. D. J. Mahony, 
M.Sc. It is one of the two main vertical intrusive dykes in the mine. 
It may be here added that at the 460-ft. level a nearly horizontal similar 
intrusion cut the Eastern Reef, and that the pitch of the payable shoot in 
the reef formation followed this dyke (south 1 in 10). The ore above the 
horizontal dyke was payable, but a little below became poor. 
Again at the 700-ft. level another flat dyke was found, but around it the 
reef was unpayable, yielding only ij dwts. of gold to the ton. This 
dyke is said to pitch north. 
Although the ore at the 700-ft. level was, in the main, of no value, 
there was one large bulging block of quartz (apart from the other makes) 
worked out, 2,500 tons yielding 5 dwts. of gold per ton. The total amount 
of quartz mined by the company on the Eastern and Western Reefs and 
spurs is given as 110,174 tons, yielding 29,390 qzs. of gold, or an average 
of 5.33 dwts. per ton. 
New Reef (Old Leviathan Line.) 
The new reef cut at the 960-ft. level is on the Old Leviathan line 
of reef formations, which were so rich at the surface north of this mine. 
From the surface to 240 feet (at a point in the north-east portion of the 
lease) the Old Leviathan averaged for a long time 1 oz. per ton, and the 
ore was 10 feet to 20 feet wide. At no point lower than 300 feet has this 
line been worked. 
At the 220-ft. level, above the new reef (Old Leviathan line), spurs 
were met with carrying a little gold, about 1 dwt. per ton. 
