76 
In the 510-ft. and 610-ft. levels the reef occurs in this broken country, and 
underlies west at fairly high angles, while the strata dip to the east ; and so 
wide is the reef that in many parts of the drives the walls cannot be seen 
on either side. The drive in the former level has broken through into that of 
the old Queen’s Birthday. 
In no part in either the cross-cuts or drives in the 510-ft. level has the 
“ eastern wall ” been absolutely identified, though it is stated in the report 
dated 16th July, 1900, of the mining manager to the company, that the 
“ line of wall ” has been passed through in the eastern cross-cut from the 
drive in the 510-ft. level “ without proving anything of value.” 
In several places in the different levels evidence of movement can be 
seen, both as faults crossing the reef in a more or less transverse direction, 
when they are termed “ cross-courses,” or as “ slides,” when the movement 
has been along or approaching the plane of strike of the reef. No serious 
displacement of the reef was, however, noticed in any part of the mine. 
There are at least two distinct cross-courses visible in the workings. One 
may be seen in the 334-ft. level, traversing the cross-cut at the point where 
it strikes the Tambaroora reef. It has a westerly bearing, and hades N. 
at about 21°. In the lower level at 404 feet, this same cross-course occurs at a 
point about 30 feet south of the shaft, and the east and west cross-cuts have 
been extended along it so that it forms their southern walls. 
In the 510-ft. level, about 80 feet N.W. of the No. 2 cross-cut east from 
the reef, another distinct cross-course may be seen. It bears 110°, and 
hades N. 20° E. at 30° and upwards. Apparently this same cross-course 
is met with in the 610-ff. level at a point about 140 feet N.W. of the cross¬ 
cut at the south end of the drive. It bears 115°, hading about N. 15° E. at 
4°, and has caused a distinct dislocation of the reef, heaving it about 4 feet 
to the east, with a flucan of 2 to 3 inches of crushed magnesian slates. In 
this level there are also two irregular “ slides,” bearing S.E., but the 
displacement, if any, of the strata is not noticeable. 
In the endeavour to find in the lowest levels the “ eastern wall ” with 
its contiguous reef of the higher levels, cross-cuts have been driven east from 
the reef from points about 250 feet south of the shaft, but without success. 
Assuming that the dip of this “ eastern wall ” continues regular, and no 
lateral displacement has taken place, the cross-cut in the 510-ft. level 
should be almost long enough to strike it, and that in the 610-ft. level 
should be considerably past it. 
The matter of identifying such a bed would not, however, be an easy one, 
as rock resembling that in the wall is found in other parts of the mine; 
therefore it may have been passed through in the 610-ft. level without 
having been noticed. Since no reef underlying E. has been met with in 
these cross-cuts it is assumed that none occurs on this wall at this depth. 
Besides these two reefs there are several small ones showing in the 
various cross-cuts underlying with the strata or running obliquely across 
them ; but as no gold was visible in them where passed through, they 
have not been prospected. Though rich auriferous quartz w T as obtained in 
the mine by the former company, no payable stone has yet been found by 
the present company. Trial crushings have hitherto given poor yields ; but 
the last one of 25 tons (just crushed) from the winze in the No. 3 level has 
returned an average of 6 dwts. per ton. 
The strata in the mine comprise dark blue, yellow, white, grey, 
and olive-green clayey, siliceous, magnesian and chloritic slates; and fine¬ 
grained, hard, siliceous sandstone. Many of the beds are highly charged 
with pyrite in single large crystals, or in bunches of small ones; and through 
