Sacramento daily record-union. [volume] (Sacramento [Calif.]) 1875-1891, 1881-12-20
DEBRIS.
IcoSrryvEp FROM FIRST PAGE.l

-;al a. the Polar Star there would have been
On immense fall there. / heard the grade
stated by Mr.. Uren, and believe it be correct.
Do not remember his figures. This Y, 000,-
GOO yards moved over that place because it
was material that was easily moved. The
dunn Of the Gold Run mines commences at
chickering's Bar. There ia not much filling
above that. chickering's Bar. l think,
is about half a mile below Canyon
creek. The fill where it commences is
small 1t tapers from there to
Ford's Bar, where the maximum fill
ia. It does not set the water back or dam the
river. Tbs grade is not uniform. II wonld
be very good place to make a railroad bed,
but it would require cutting and filing
Wherever tailings are dumped in there APP
pears to be place higher than the grade.
One Of those places Is in front of Jamison's
ravine, where the material comes down from
the Iowa Hill diygings. Cannot state the
amount of the grade there.
Q-Is il not fact that the river is not
only graded from Pickering's Bar to Rice's
Bridge. but the stones in the bottom are
graded according TO their sizs?
A.-No, sir. l say that the grade is not
uniform, and the material differs between
every dump. Near each dump the ma
terial is coarser, and then it becomes finer as
you go on down, until you strike another
dump. When l was there seven weeks ago
with Mr.. Gould. spent most of the day
there. Went on horseback from chickering's
Bar to Rice's bridge. Went to Dutch Flat
the same night, after dark. Had no instru-
ment with me. Estimated the width Of the
river. At Stevenson's bridge the high-water
mark just became visible. It was obliterated
in places below there. In relation TO
high-water mark would say that a success.
sion of floods for many years, according to my
observation, will leave distinct, traceable
mark but one food would not leave a mark
that would be discernible, or could be relied
upon. did not see the high-water mark at
Rice's bridge. Did not measure at any place
the distance between high and lowwater
mark. 1t varies along the river. l got
at the fill in the river by my observation
and judgment. There were some deep
holes in the river originally. The minimum
deposit was at chickering's Bar and about
three feet at Rics's bridge. In the middle it
was between 60 and 20 feet deep. The deepest
place was near Ferd's Bar. | estimated it
from its present condition and my knowledge
of it in 1850. There could be ell of 20 feet
deep and not set the water of the river back.
The river was much narrower in 1880 than
now. went to Mineral Bar during the first
days of May, 1850. Left there two or three
months afterwards The river was consiier-
ably high then. We could work to the bed
rock when l went there.
Q-You speak of material having been
impounded in the river. What do you mean
by that?
Al mean that it lodged there; that it
was held there for the reason that the water
did not move it away. There was no dam.
II lay il the bottom of the rivers. The ex-
ira hight at the dumps is included in my es-
Inmates of the average ill. Have not been
there since seven weeks ago. We crossed the |
river several times. We remained on our
horses, and only got off when we eat our
lunch. The maj iriiy of the material that is
impounded consists Of large powders and
cobbles, and from that tspers down to sand. |
. he ' &C.. .mpouiic1.":S, may not be the
proper word to use. When was there the |
stream saw no masses of this cement in
the river there. Do not think this conglom-
crate would move over the cobbles. 1t would
60 with the cobbles, if at all. l do not be-
lieve that it has less specific gravity than the
cobbles. Do not know the specific gravity of
this conglomerate. l should think that its
specific gravity is about the same as rock. l
did not look for any of that material, or |
might have found some of it. did not say
that complete pulverization of this material
takes place The powder is used to pulverize
it, and also the sledge, but the water is not
used to pulverize it. The water is used to
wash it away. They pulveriZe it as much as
possible. do not say that it is substantially
all disintsgrated. l stated that | estimated
the rock gravel in the Gold Run mine at about
so per cent. / never saw any clay there.
Have never looked for any particularly. 1
have examined the material of the mine three
times. Do not know what the slate rock is
made of. It is said 70 be a eedimentary de-
posit The depth of gravel right at the Gold
Run mine is greater than at any other place
on the lead. think one inch of water would
wa.h about three or four yards in "a hours, Of
the upper gravel there now. think 1t would
not wash more than two yards of the lower
l think it would wash eight or ten yards Of
the red surface washings. have been there
and helped Mr.. Uren make that cross Sec
ton. Have been there three times lately.
Have been there several times. Ny idea is
that only from one to two per cent of the
material f,om that mine will go below Rics's
bridge / do not know the velocity of the
water in the fume or in the river.
Q-How do you determine the velocity of
water in river?
Al do not determine it.
Q-Your education an engineer never
extended that far. did it?
A.-The practical part does. have done
such things sometimes, but l have not in this
case.
Q-Were you educated as an engineer?
Al was educated partially by myself
and partially in the State of Vermont.
Q-What technical school did you ever
attend?
Al was not educated at school that
was specially founded for the purpose of max.
ing engineers.
Q-You are surveyor, are you not?
Al am. l have done good deal of
that work.
Q.-Are you a surveyor or an engineer?
Al am both.
Q-How do you determine the velocity Of
running water?
Al determine the velocity of water by
actual measurements.
ON what manner?
Al would time the current and measure
the cross section.
Q-Do you pretend TO understand the
measuring of running water?
Al am not an expert in hydraulics, but
l have always been able to determine any.
thing of the kind that l have ever needed.
My mathematical knowledge is based upon
Professor Davies books on mathematics.
Q.-Is there anything TO impound The
debris that may be put 10 the North Fork.
between Pic&ering's Bar and Rice's bridge
A.-Nothing except gravitation. The
grade is such that its gravity would carry it
down as far as Pickeripgs Bar, but do not
think it is sufficient to carry it to Rice's
bridge. say that Bear river Is at the pres
ent time about LOCO feet higher than the
North Fork of the American. The North
Fork Of the American is about the size of
the main Bear river. The Polar Star mine
tails into the Bear river-not into the Little
Bear river. The Little Bear river comes
into the Bear river above the Polar Star.
Above that is the Nary Red mine and the
Liberty Hill mines. The water in the Bear
river at the Polar Star mine is less than that
10 the North Fork Of the American at Canyon
creek. The Polar Star dump extends clear
across the river and has damned the river
up. 1t has made pond back, and raised
{ Q river 100 feet. o.; course there is a
water way over it. That obstruction does
prevent the flow of sand down the stream.
A large pond is made there, and the water in
it is very still. There is water below the
dump, of course, and when the mine is work
ing the water is muddy. but gets clear short
distance below. The water runs in an irreg-
ular manner ever this immense deposit Of
bow'der and cobbes l have seen it dozens
Of times The dam is not filed no above
with tailings. Immediately below the dam
the water may carry some sands but I think
no cay. Have not been right a. the dam for
perhaps six months. Never measured it.
OH sill your Acquaintance with the
American river, do you know Of any dam
that has ever ohstructed the down flow of
mining debris in that river;
Al dc.
0-Where