The Fort Peck press., 1935-02-14

cu WITHOUT a single IdtaI ldtaI aCCi-
dent having occurred inside the
tunnels or gate shafts. Great credit
is due Mason & Walsh Co for this
excellent safety record.
Also worthy Of note are record
breaking advances in Pilot Tunnel
No. 3, where during month from
Jan. 10 to Feb. 10 a total of 1858
lineal feet a completed. The
best week of this month GO shifts)
374 it we're recorded, best advance
for | da being go #. Close compe-
tition came from No. 2 Tunnel in
which 372 It we're excavated in 1
week & so # in l day.
During the past wk total advance
for all pilot tunnels vas lz24 feet.
At downstream portals, work is
proceeding in all 4 shafts icing ex-
cavated for tunnel headblocks.
These 4 shafts are sunk a depth of
around SIS #. AS the hole goes
down the sidewalks are braced with
I-beams placed horizontally. Be-
tween the beams No. IL gauge cor
rugated iron sheets are placed ver-
tically to retain the shale. These
corrugated sheets are being used in
place of the usual wood planks, or
Tagging" which is often used in
trenches or pits for sewer pipes. A
total Of 700,500 lbs Of structural
steel and sheet iron will be used in
these shafts.
Since the shafts are in firm shaIe
the material must first be looSend
by drilling & blasting. Men with
portable pneumatic drills break up
the larger pieces and cut sidewalks
to neat lines. The muck"
is then piled in center OF pit ready
for removal by machines. On the
ground above, crawler-cranes with
clamshell buckets hoist material
from bottom of hole throw
ing it in pile behind them. The tall !
suyed derricks then pick it up and =;
it over the side of concrete I
leadWalls.
Forms are now being erected for
portal structures. The horse
hoe shape OF the tunnel portals
:ap be seen outlined in the forms.
4arge ANTS of reinforcing steel bars !
carefully bent SO as to lie close to- I
in the bottom of excavation I
nave been set in place.
ANGLE TO
THE TUNNELS c
Massman Construction Co, now '
nGaged in e%xcavating upper end of Y
Iillway, has received all of the As Y
ew 6-yard dump-trucKs ordered '
ome time ago. In addition to this i"
irt moving equipment, a new auto =
atrol road grader which mounts a n
mall tractor & a new 75h.p. trac- U
u have been received. Ii
With over 80 trucks hauling dirt 81
} | disposal area, the contractor
DIS found it necessary to build an AZ
1ditional road TO relieve c~onGesrion VI
nd reduce possibility of collisions pi
lore dirt was hauled last week
Ian during any wK since Massman -
o started Work. about 10000 yds -
cling moved. q,
Martin Wunderlich, contractor
/ lower end of Spillway, is digging
to firm shale. 1t has been nee n
sary to drill & blast so the power da
Iovels can handle material easily. TT
lie 4 shovels moved 10000 GU. yds tit
dirt last week, Mi
JT-OFF WALLIS 150-ft PLATES
Frazer-DaviS. Co & G. L. Tarlton
ntractors for tn cutoff wall across
valley, started driving steel
Get pilin9 for the 1st of a series
4 range walls located at west -,
'utmeDt of the dam. Erection of
d gantry is nearing completion
IOTA-FT P. R.R. 800 CARS DAYICo
The govt RR Wiota to Fl. Peck MI
st wK handled End largest amt of iel
light since put in operation, about OF
5000 net tons coming to dam,
his tonnage was gravel for th toes att
Ostly. 500 carloads in 1 da. Since Fl