The Middlebury register. [volume] (Middlebury, Vt.) 1850-1882, 1870-04-19
rESTINONIALS.

i. W. Van Norton, Railroad COntrac-
tor Air Line Railroad, Reeds Gap, Conn,
under the date December 2sth, writes ;
with the Diamond Drill we have bored
through the worst rock ever saw, and
it makes the holes even and of the same
size at any depth, md does the work of
II to ID men"
C. b. Parsons, Superintendent st.
Joseph Lead Mines. Cadet, Mo-, writes,
December 23, 1869 with the Dia.
mond Drill we have explored large area
of our property at small cost, and open
cd large deposits of galena at greater
depths than ever before reached. In its
operation it works perfectly, and | can
see no apparent difference at - feet on
125 feet depth 1t takes but one man
to operate it, is easily adjusted, and
bores with great rapidity. Steam is con-
Quoted through pipe and hose for 200
feet with very little loss by condensing.
David Lymon, President of the New
Haven and Willmantic Railroad, Middle.
ton, Conn, December 9th, says "ThO
Diamond Drill is now doing its work in
hard trap rock, and we shall depend
wholly upon it to remove the remainder
of the cut, which is now 200 feet long
by 90 feet deep, through cut - feet
wide. The machine will bore on an a.
verage 80 feet per day in this hard tap
rock 1t is impossible to drill by hand
in this rock n uniform hole of more than
10 feet deep, but with the Diamond Drill
We make perfect uniform hole Of almost
any depth. We can remove "a feet in
length to blast Of five holes by use Of
the battery, exploding all at once. All
agree that the holes made by this ma
chine are worth great deal more per
fsot than those made by hand, because
the holes are inst as large at the bottom
as at the top"
Gen. Edwin W. Sirrel, Chief Engineer
New Haven, Middleton and Willimantic
Railroad, writes under the date of Dec.
ember 81, 1859: The Diamond Drill.
manufactured by Severance & Holt are
working upon this road and are doing
well, and | consider the Diamond Drill
as now arranged for heavy railroad work
complete success"
J. c. Barlow, Director of St. JOSEPH
Lead Company, Sept. 10, 1869, says il
his letter of that date THE perform
auce of the drill is wonderful, SURPRISING
our expectations. We have bored ter
holes, $50 feet deep, taking out the core,
which gave us perfect record OF oul
mine for every inch of the different STRAIT,
bored through. Under 65 feet of surfac,
rock, we bored through 25 feet of lead
bearing rock This was wonderful dis
covery, and greatly enhances the value o
our lead mines.
William 7. Gleason, agent of the Mid
dlesex Quarry Company. Portland, Conn
December 27, writes: We have boreC
down in our quarry 3l2 feet, have al
the cores taken out, arranged in boxes
and numbered, so that We can tell at
glance the quality of the rock, at an,
depth. see no reason why We coul,
not have bored thousand feet, had W,
desired to do So
Witherbees, Sherman a. Co., in thei
letter of July ?, 1869, from Port Henry
New York, says; I'VE have witnesse,
the boring through of our hard rock t.
the depth of $40 feet, bringing up per
feet and continuous core, as specimen
of the rock for the whole distance. W,
consider it the sensible, as well as tn,
most expeditions method of testing tn,
value Of any mine"
Samuel E. Griscom, Schuykill county