hich may appear either as a
mass or "blow" of quartz, sometimes sixty feet in height, or as a solid
wall or dyke which can be followed for perhaps five miles without a break;
the direction in which it runs is known as its "strike."

Reefs may go down vertically, or on a sloping "dip" or "underlay." The
country rock lying immediately above the reef is the "hanging wall," and
that immediately below, the "foot wall."

In prospecting a reef, a miner walks along the strike of the outcrop,
"napping" as he goes, i.e., breaking off with a hammer or pick, pieces of
the quartz or ironstone outcrop. Each fragment is carefully examined for
the presence of gold, which is nearly always found, if on the surface, in
a free state, that is to say, uncombined with any other mineral. If any
gold is present, it may occur in small specks as fine as flour, or in
large solid lumps as big as one's fist, as in Bayley's Reward Claim,
Londonderry, and one or two other mines. In the latter case the rich find
would immediately be pegged out as a claim, or lease, and work commenced,
the coarse gold being won by the simple process of "dollying" the ore;
or pounding it in an iron mortar with an iron pestle, and passing it when
crushed, through a series of sieves in which the gold, too large to fall
through, is held.

To estimate roughly the worth of a reef in which only fine gold is visible
it is necessary to take several samples along the outcrop, "dolly" them,
and wash the powdered quartz by means of two iron dishes, from which the
light material is floated off, leaving the gold behind. From a series of
experiments an idea can be formed as to whether the reef is worth further
work.

It will be found on napping a reef, that the gold occurs at more or less
regular intervals. This deposit of gold in the surface outcrop is the top
of a "shoot" of gold, which may be followed down on the underlay for many
feet. And this peculiarity in the distribution of the metal has been the
cause of much disappointment and misunderstanding.

Having determined that your reef is good enough on the surface, the next
thing to be done is to ascertain, by means of cuts and shafts, its nature
below the surface. This may be done either by an underlay shaft, which
follows the reef down from the surface, or by a vertical shaft, sunk some
distance away from the outcrop, to cut the reef perhaps one hundred feet
below.

By a series of shafts with drives, or galleries, conn