New-York tribune., 1875-02-26
SCIENTIFIC MINING.
AMERICAN INSTITUTE OF MINING EN-
GINEERS

AMERICAN INSTITUTE OF MINING EN-
GINEERS.
THE MORNING sEssIoN-METHoDs OF INCREASING
THE COMFORT OF MINERs-THE zINC-siIVER-
LEAD ALLOY IN LEAD DEsILvERIZATloN-IEAD
MINING AT NEwBURYPORT, MASS.-A BATCR OF
UNREAD PAPERS
tFRoM A SPECIAL CORRESPONDENT OF THE IRiBUNEl
NEw-HAvEN, Feb. 25-1he Institute assem-
bIed this morning at 10 O'Clock, and. after the recon-
mendaton and election OF several new members ana
associates the discussion resumed on the subject OF
nrovons for the material comfort for miners, which
was suspended last evening. Prof Eggeston OF Coiuu
bia College referred to plans in operation IN dihereht
parts of Europe, which were highly successful Much
is to be learned this country from them IN these re-
spects although there obstacles here 10
such measures which do not exist in Europe
Hero there are large number OF nationalitles
To contend with and there is concerted action In
this country efforts have been confined to the securing
of comfortable houses while in many parts OF Germany
the moral and intellectual welfare OF the miners Is also
attended to- Hospitals also provided on the gratu-
tous plan in England but in France the hospital fund is
maintained from the reservation Of certain part OF the
wages Of the workmen. The latter method works more
favoraby than the former In the further discussion OF
the subject obstacles considered which arise from
anagonisms among men from their religion from the
low grade of education among miners and especially
from the prevalence of drinking Messrs E. r. Pech'n,
Drinker, and Coke, and Profs Hunt, Blake haymohu,
and Eggeston also spoke
A paper was then presented from A. Eers of New
York and read by Prof. Ray ymond. on the American
method of treating by dstiaton the zinc-silverlead
alloy obtained in the desllverZaton OF lead IL was
shown that the methods employed in the western
States are superior both IN efficiency and economy to
the more complicated treatment lately introduced at
Tarnowtz in silesia. Profs. Eggleston and Raymond
discussed the subject briefly.
Several papers then presented by utle but not
| read as follows:
On "The Eastern Virginia Coal Fields" accompanied
by maps and specimenc, by Martin CoryeH OF fehnsy
ON "The Progress of American Metaurgy in the
West During the Year Past" by A. Eilers, NewYork
On "The Geographical Dstribution,Of Iron ores, by
Henry Newton ofNew-YorK.
On "Fres in the Mines OF Wllkesbarre," by 7. NJ.
Williams of Wilkesbarre, Penn.
On THE Production OF Coal IN the United states, ny
r. p. Rothwell Of New-York.
Prof siman exhibited and explained specimens Of
crystazed copper and of cIysalized gold The latter
was such prepared for the use Of dentists as also
that derived from howered amaleam' by treatment
with nitric acid TO remove the mercury These were
arranged microscopic slides for convenience ana ex
animation. , ,,.., ,,,.,,or, -.
the school of Technology Boston, the Newburyport
lead mine. The paper read by title only,
s%5ect S1s Dr. masr Sn' fhe source Of the ore is
veia having northeast course, although
in the drift The vein the ancient crystalline soda
of the Two shafts each OF the depth OF 40 feet
have been sunk The portion OF the vein was seven
inches breadth in and about SIX feet in inc other
To determine the breadth OF the odes In the shaft fur
ther explorations will be necessary. Tie ore is ga
lena carrying silver with some gray copper, yielding
assay both silver and gold Zinc blend native silver,
aud small portions of iron pyrites have been found
Assays from the b0rinCs from portion OF the lode
showed over 50 per cent lead wth some gcia ana yer
Hunt stated that he had not visited tine mine himself
but gave only the observations as repSied by Prtf
Hl lal
ton and made the assays.
AFTERNOON sEssIoN-sIEMENs METHOD OF IRON
MAKING-COKNG INDIANA BLOCK COAL-MEA-
sUREs FOR A CENTENNIAL MEETING Al PHILADEL-
PHIA.
PROM A SPECIAL CORRESPONDENT OF THE TRIBUNE]
NEw-HAvEN, Feb. 25.-At the opening of
the afternoon session letter 10 Prof EgglesOn from
Peter Ritter Won Turner Of Loeben Austria, read
by the President. 1t concerned method Of
featuring iron direct from Semen's direct pro-
cess Discussion followed by Profs EgglestoD, Dr.
Hunt and Mr.. Holley. The following resolution was
then introduced by E. Pechin OF Pennsylvania, and
unanimously adopted:
Resolred, That the Council be authorized to renew to
the Iron and steel Institute Great Britain and TO
tend 10 other foreign professional societies or their
members the cordial invitation Of the Institute to take
part in May meeting OF 1876, and that the May meet
ing of 1875 held Philadelphia and that COun-
eli authorized, in view of the Centennial Exposition
TO make such arrangements for the said meeting may
conduce the comfort OF members and guests and to
the interests and value OF the sessions.
Mr.. Pechin then gave an outline Of the history Of
iron. making in COnnesve District, Pennsylvania, de-
scribing the beds Of ore, and especially Of
new forms OF ore in large quantities. from which iron
can be very cheaply made He also described the
OF the production OF the celebrated COnnellsvile
coke This followed by discussion In which DR..
Drown PrOfs Silliman Blake and others participated.
The last paper OF the afternoon read by j. S.
Alexander OF Philadelphia Coking Indiana Block
Coal" This coal is OF strafed structure, being
posed of alternate Of rich btuminous matter and
q so-called mineral charcoal The latter acts a
barrier, greatly retarding the dissemination OF
Brazil, Indiana, a very good coke has been
from the block coal In its native state IN the
beehive This method has proved so valu-
able that 20 have been built for carrying it on
hereafter 1t proposed to the coke produced for
O reducing agent fOurfftbs block coal coke
being the best proportion Such mixture basis
OF block coal az 81 rs ton, Will cost only g. with
resultant slate than In the COnnelsve coke. An
est discussion followed, In which Mr. Pechin Dr. Hunt,
and Profs. siman aud Blake took part.
THE EVENING sEssIoN-THE WHITE LODE OF COLO
RADO-BROWN HERMATITE DEPosIIs-ADJoURN-
MENT OF THE CONVENTION.
lFRoM SPECIAL CORRESPONDENT OF THE TRIBUHEl
NEW HAVEN, Conn, Feb. 25.-The first pa
per read at the evening session description of tho
white Lode Park County Col, by J. L. Jernegan II
included not only account OF the lode but gea
ogca formation Of the neghborhood. aud Its general
mineral nature Profs. Raymond, Blake, and silliman
discussed the paper, the latter calling attention
waste several hundred thousand dollars mills at
present an illustration, he urged, OF too frequent blum
]