Lincoln County record. [volume] (Pioche, Nev.) 1900-1905, 1902-03-07
MINING INFORMATION.
Mining and Scientific Press. ]

is 100 feet of piston motion pei
minute.
To sharpen dull files, immerse
them in dilute sulphuric acid till
they are eaten into deep enough.
A STANDARD candle" is one that
consumes l20 grains of spermaceti
per hour, made six to the pound
and ( inch diameter.
Mining locations can be made in
forest reservations on compliance
being made with the rules and re-
gulations established by the Interior
Department.
Boiler tubes often wear through
rapidly where internal feed pipes
are allowed to rest upon them. Such
pipes should be hung from the
braces or shell.
The chief commercially exploited
minerals found in Peru are gold,
silver, copper, coal, quicksilver,
petroleum, salt, borax, lime, ochre,
marble, sulphur, alkaline salt and
phosphates.
No location Of a placer claim can
be made to exceed 100 acres, what
ever may be the number OF locators
associated together or whatever the
local regulations OF the district may
allow.
Drill points can be tempered and
rendered very hard by the use of
the following composition. Six
ounces carbonate of ammonia, six
ounces nitrate potash, four ounces
soap and fifteen gallon of soft water
These ingredients should be
thoroughly mixedby agitation. The
tool points while still red hot must
be submerged in the liquid only so
far as the tempering is wanted, and
supported in this position until
cooled and hardened sufficiently.
Secretary of Interior Hitchcock
has given a decision establishing a
rule that "where the same person or
company owns several contiguous
mining claims capable of being ad-
vantageously worked together, and
adopts one general system for the
purpose of developing them all, the
value of the work done and improve
ments made pursuant to such system
whether done on only one of the
claims, or outside of them all, is
available toward meeting the re-
quirements of section 1926 of the
Revised Statutes relative to expendi-
ture of $500 for each of such work
or improvements credited to each
claim, that such claims should all be
embraced in the same proceedings
for patent. II the mining laws are
complied with in other respects,
such claims may be applied for and
entered singly or otherwise. and at
different times, without in any way
impairing the right to have the
value of such share credited to them
respectively under that section"
The influence of copper in lead
smelling depends upon the sulphur
present. In smelling raw ore copper
pyrites loses about one-fourth Of its
sulphur, and fuses down into copper
subsulphide or matte. into which
other copper sulphides enter un-
changed. II there is not sufficient
sulphur in the charge to convert the
whole of the copper into cuprous
sub-sulphides the residue of the
copper will be reduced to metal and
alloyed with the lead, forming O
hard, heavy mixture that sinks to
the bottom and closes up the passage
OF the lead we'll. Even when suffi.
cient sulphur is present, this is likely
to occur in concentrating copper
lead matte, carrying IL per cent and
upwards OF copper if the Stag is
highly furruginous. The reason if
that in the presence Of highly fer
ruginous basic Stag some OF the sui
phur is taken up by iron, and al
equivalent proportion Of copper goe
into the lead. When running OF
copper ores, therefore, slags fairl..
high in lime give cleaner lead, ant
in such cases slags with an excess o
iron are to be avoided, with Stag
high in lime. and, therefore, melting
at high temperature 1t may b
reckoned that nearly one-half OF tn
sulphur not appropriated by th
copper will enter the Stag or pas
of as gas