The Iowa plain dealer. [volume] (New Oregon, Howard County, Iowa) 1867-1895, 1876-09-08

va sssswssas ~ Wksa ss@ss sA4 tNHAss
sA.A ~ ~ - "a ssss ssw8
IT. ess~a sssaaaw&s@ nj Hvsa tsms8 u
nmA #*~ssAn A. tsks ta@s~ AmaAAT 49,
AHss.s ta*s IA MsssssNtwaa AmA sasssss~a+
~ *ssM*#A. ~fssaA iAs@ asHss Tsv#ms~ass
esfN#aHssA. ste sAt4w nssss II tswsA wAsl
" assnnsastt.ss sss sass ssssssss sstAa@sssr
~ ~sHA "A taNswttNe aNA tHmtMw u
nws sessssa. @nA nN#assHe ts4aAanA mssAessr
est#sss NE rssg@ssssssa snA lss~sssen 4
TIE sassssawss4
IT, samNxas smisasAse fsssn tsaa m&su
aaaAss. mAA lsl ~sse sAnms sss~~snF ssssH.
Ass aaa sslr@Assa uus. hNsssR sAsa mt4ws
rsu*t IA fawA sartastssi ~ iTa naes~.
sssssh light Fsss Nqnsfs. bHs varying il.
bright ssssfa i~ssnss Es~s nsAs lhe shalt
VI tn ns s~~Avs Fs~l nnMs tlsr .misss ras
tWfNfssvn@A III the s.wsf III r~sk ilus
lHsasa \. NV hsae~ have l~~xn ssssv~t In
~ nr~ara tlirssinn, ranging IN ,i~rsA
ffani thsv~ H. eleven ssst. With 4 nnslefm
siisna.is iss a fhrs iHeheA Thr~r hnire
will he thar fss~astArlt~ I'M slss s&rassave
material. which Will ~ dynamite wisefv
tla~ ruck ii hxrslrst aad ofsiinAsy vnimn
powder where The snt~finenmlsens mass
II more ffislsl. and s~aief ts tlaw ~
fieus An THE doos NJ The iunnel slal,e*
eas~ari frsn, slrrih NJ thirty t~o fert
~ Iofty f~t helsw low wntef. and ihr
.isrsh ~ water svpnir~d f.r investigation
In the fsighlorhptsd ~ New York II only
twenty six fest Al mean Inv water, Ii il
rlain that after thc cxrlnsinn and The
subsequent dredging there will NJ ann.
rla rsum fof the largest ships iii the
world io reach New Ynsk lay through
the waters VI the sound, and Thus make
= saving NJ Time on che voyage ~ and
from Europe.
Nitro glycrrnc wMa for time CON.
templated m tho most suitable explosive
agent: lint on mature consideration IL
wns rejected, not only ~ bcing too dan.
Rcroun In the manufacture, but also bc.
cause some vi Tho charges arr liable n
slip ont of tho holes prepared for them,
and In such mn event aitro-glyccrenc
would hc liA..,, 10 explode prematnrcly.
Dynamite, which Il composed of % per
cent of clay and 10 per cont. Of nitro.
glyccrinc, was finally seleclcd and II II
calculated that Wch charge will break
up twenty cubic yards, there being In or
about 10000 cubic yards In Tho entire
mass 10 bc exploded. A bomh-prooi
chamber hAa bccn prepared for tho opcr-
alors, at distances of 800 feet southeast
of tho main shaft and In tho direction of
tho Ravcnswood road. In this chamber
will hc placed ri lcaAt 900 gnlvanic hat.
terics of tho pattern known m urovcs,
aud each of these will explode from sew
cntecn 10 twenty cllArgcs. A most In.
genious scheme has been devised. by
! which oil thcac batteries will In brought
into action at tho aamo time, and then n
complete circuit will bo formed, setting
on tho entire \. 800 charges together, and
utterly destroying tho great plateau of
Jock which has made He'll 0sso 20 dan.
erona 10 navigation.
uon. Newton has been unceAaing In
his cxcrtions, and Inns kept up n con-
stant serfcs of experiments 10 insure per.
foot SUCCESS when thu great day comes
aud there In no reasonable ground for
fear ri any untowNrd accident occurring.
The assistant engineers. who will hnve
practical charge of tho operations on tho
day of tho explosion, viii, according u
the popular belief, bc placed In posi-
tion of great danger but this In only
visionary, ~ tho utmost foresight hNr
been used To prevent my harm 10 thu
operators.
Tho engineers aro Of opinion tho onl,
apparent effect of tho explosion will b.
tho hurting into tho air oi huge cnl
nnn II water. with perhaps como bits d
rock, as tho resistance ol thu supcrin
cnmlent water will prevent my excop
few of tho smaller masses from bein,
elected beyond thu surface. Az soon "
ever thc explosion In OVER tho work u
dredging win bagin, In order 10 throw
thu channel open ~ navigation NJ iii,
earliest possible moment. iDrl
/ us.rtsl