Amador ledger., 1900-06-29
presses.

W. c. Ralston. general manager of
Melones Company at Robinson's Ferry
is now at the mines of the Company.
1t is said that he will spend most of his
time at the mine and take personal
charge of affairs. Work viii be re-
sumed on the dam in about two weeks.
Chronicles: At the Berdina mine
near this place, owned by New York
company and managed by ]. K. Car
penter, everything is progressing nice
ly and the ore is improving in value
daily as the work in the tunnel pro-
crosses. Some very good rock was
struck last week, which assays very
high in both sulphurets and free gold.
The mill is running day and night and
is crushing four tons of ore to the
stamp The new six-foot concentrators
of the Hendy- Norton patent, have
been added to the equipment, making
the plant first-class in every respect.
A forty sixteen candle-power dynamo
supplies light for all the buildings and
mill The grounds around the Office
and mill have been leveled off, present.
ing a much neater appearance. The
boarding house has been enlarged to a
six room building. A new assay Office
has been erected to meet the require
ments of the mine. New chairs and a
beautiful writing desk came up this
week for the use of the business man
ager, Mr.. Carpenter.
Jnst at present there seems to be a
lull in mining activity in the vicinity of
Jesus Maria, but it is to be hoped that
this will be of short duration as the
mines are there and only awaiting the
hand of development. On the Mauna
Bros. mine, six miles from this place
and about a mile and half from Jesus
Maria, operations are expected to begin
soon. This property has been worked
off and on by the owners for some
years and as far es work has progressed
the result is very satisfactory. One
shaft was sunk to depth of fifty feet
on the ledge, revealing 3-foot vein.
Nineteen tons of ore from this shaft
were milled in the Whiskey Slide mill
and the yield was SIS to the ton, ex-
elusive of the sulphurets. A crosscut
tunnelfrom Wet Gulch was next run,
cutting the vein at depth of 80 feet;
thence the vein was followed on its
course for distance of go feet. At the
intersection of the crosscut the vein
was three feet wide, but its average
| width, taking the length OF the drift,
is about two feet. Near the end of the
drift the vein divides, one portion fol-
lowing the foot wall and the other the
hanging wall, with yellow porphyry
between, about foot in width. This
horse or porphyry formation grad
ually pinches out and the two veins
come together again in the shaft,
where the ledge is three feet in width,
as above stated. The chute of ore
pitches north, as far as explorations
nave gone, and the ore Is good milling
all the way The trend of the vein is
north and south, and the dip is slightly
to the west. The formation is contact
between slate and granite. Three
assays were made through W. B. Muir
dock of San Francisco, the highest be-
ing S27 and the lowest 81 to the ton, ex-
elusive of sulphurets. This property
is the north extension of the Caldwell
mine. 1t is 30 situated that water for
power could easily be had from Jesus
Maria creek, but for the present steam
is deemed the most convenient and ex-
peditious. When thoroughly opened
up there is no doubt that this will prove
valuable mine. Some mining experts
who came up a short time ago to in
spect the property were well pleased
with its appearance.