New-York tribune., 1872-05-24
THE INSTITUTE OF MINING ENGINEERS
ELECTION OF OFFICERs-YISIT TO THE STEVENS
INsTITUTE-INPORTANT PAPERS.
The Institnte of Mining EnpineerS has

ELECTION OF OFFICERs-YIsIT TO THE STEVENS
INsTITUTE-DPoRTANT PAPERS.
The Institute of Mining Engineers has
elected the following officers for the coming year;
President. Rossiter w. Raymond, Hew-York; secre-
Pennsylvania; Managers, Abraham ;. Hewett, New
York G. W. Maynard. Troy 7. M. Drown, Phiiadel
pha, and several others.
Yesterday the members OF the organization visited
the Stevens Institute Of Technology. in Hoboken. where
they were joined by exGov. Ward, Peter Cooper Prof
Draper, DIR. John Torrey, Prof sillman and large
company Of distinguished scientific men. Prof. Henry
Morton Principal of the Institute, received his guests
in hasptable manner, and several hours were spent in
examining the cOmmodOus new building and the val
liable collection of apparatus which the Institute pos
The workshops Laboratories, and lecturerooms
aside from the excellence Of their construction, have
every appliance for facilitating study. Although the
Institute has not yet been open eight months, 1t has
already 81 students.
In the evening the members reassembied at the
of the Geographical Society. Cooper Institute, when
Prof. r. w. Raymond of NewYOrk read, in sub
stance as follows. on the Eureka Navada) and other
Base Metal Districts Of the Vest"
"The Eureka District stands third in rank OF the
silver producing camps of Nevada. During the most Of
Of t6e Racbete and Ptz have been i'm blast Late last
year. and in the earlier months Of the present year. the
Eureka Consolidated Mining Company discovered i'm
in the .Lawton tunnel. Raby Hill is spur
of the diamond range; The openings of the Eureka
Top the western and the new the eastern
slope The strike Of the body is nearly east and
west and its dip about 45 degrees to the northeast For
this first discovered the western slope
Of the hill, where the vein crops out The LawOn tun-
mel in 600 feet, and passes 40 feet TO the
north OF the Keyes shaft, between il and the winda
shaft. AT it's end 1t is in ore. The Keyes shaft is
feet deep and the main h0sting shaft for
the old works These the largest extant In broken
quartzte The approach to the VEN matter is distn
gushed by yellow color of the first Dense afterward
broken limestone; next by stronger impregnation OF
puveruent brown and yellow iron and stripes of the
rst finally the ore body proper-brown iron ore, with
mpregnatODs and bands Of carbonate Of lead lead
ocher is reached. While on the western slope beside
lead with sOcaed "black carbonate" which is prOba
bly, a mineral; and little galena were found. The
encountered the eastern slope in ronstained
masses, (which are poorer III lead are principally
highly argentiferous galena and "black car
Donate" in Jumps and nests OF often
100 pounds weight. For this reason there is
tuns of produce one tun of lead while formerly
required 10 to IL tuns At RchmOp the best and most
profitable smelling works in the State building
getcally. TAN signs point TO the enormous industrial
Increase during the coming year. especially If capitalists
should take up the Prospect Hill mines The total pro-
duct Of bullion of the EkaC Consolidated during 1871
about 3l72 tuns The average contents in gold and silver
for the whole yearly product may be estimated S25O
per tun. Adding 500 per tun for the lead have
production Of gold, silver and lead during 1871 by the
various companies Including the Eureka Capitalization
III t2CSo,6os Sc; the total quantity Of bull
lion shipped 565 tuns 074 pounds. All the base metal
mines in the district have the character as those
previously described and vary less in the classes Of
occurring In them than In the size Of the ore bodies
Prof Raymond then read paper, submitted by r. II.
Terhune of Chicago, on "Maeable Cast Iron" Papers
were also read on "Peekham's Improvement in Forge
Fires and Furnaces" by George W. Maynard, and on
"The New Mining Law" by Prof. Raymond. The Insti-
tute is nomnaly adjourned until october. when 1t will
VIII visit the East River caissons and the Hell Gate
works.