The Fort Peck press., 1935-05-09

Mont. are uow pumping ove 100,
: 600 cubic wards of fill into dam De
, day Fill is being placed into onl,
-I3 sectors of dam at the presenr
time. The fourth sector, which is
], the portion upstream from the cut
off wall and east of river, cannot be
filled until operations are completed
on construction of cutoff wall, On
May 3, one of the dredges turned
from the river channel and started
cutting into the solid bank of the
west flood plain. All of floating
boosters have been taken to points
adjacent TO their dredgea and two
OF them have been cut-in to pipe
lines. 1t is expected that a third
booster will be cut-in sometime this
week. One Of dredging units has
been spceded up to utilize full ca
pacity of electric motors. This IN
1t lj now maintaining a velocity of
over rs feet per second in the 28-
inch. 1O0O-foo pipe line. For
short periods of time the velocity
has been maintained a. 81 feet per
second. These veIocities are higher
than those commonly used in n.y.
draulic dredging operations.
Government crews at boatyard
have been kept busy building rock
chutes for tie railroad trestle,
assembling pipe line pontoons into
strings of 4 or 5 before they are
taken upstream. operating the der
rick boats, as we'll as taking care
of their regular maintenance work.
The steel launch "Niobrara'' was
received by rail and placed in CON-
mission. During winter, about 30
skiffs of various types were con.
Structed in boatyard and are now
being used. Some of these are used
as rowboatS, others are propelled
by cupboard motors. One of the
services supplied by the boatyard
consists of a marine diver with
complete equipment available at all
times for sub-aqueous investigat-
ions. One of the derrick boats has
been equipped with an orange
peel bucket for use in minor
dredging operations.
Crews of Mason & Walsh Co.
have been making good progress
Oh enlargement of pilot tunnels for
foundations of gate shafts. This
work has been carried forward so
far without any serious accidents
considering the conditions :
which the work must be
done, is a creditahle showing for (
crews engaged. ,
The shafts, being enlarged t
rom the top of east abutment to i
unnels, are proceeding downward
lutte rapidly. Two of them are
Town 115 foot, while 2 smaller {
emergency gate shafts are down \
bout go feet. The small pilot shafts p
n centers of each excavation, are s
,eing used as glory holes, down T
which the loose eXcaVated mater T
al is dumped for removal by train r
through tunnelr below. In connect 7
On with operations at shafts, all
:onstructiod materials must be
by auto-truck up a steep
Dad to working area.
The greatest amount work being
one by the Mason & Walsh Co. :.
n their tunnel contract is at the !.
utlet portals. In this area, 9O44 :;
ubic yards of concrete were placed :.
uring the week. $4,000 cubic yards G
{ shale were excavated. The y
ase section for one block of north
staining wall, the mid section of
o. l portal structure, and top sect :,
ms of 6 headwall blocks, were :.
oured during week. These pours :,
1000 cubic yards of con- !,
'ete. On the open-cut portions of =
work is being expedited by r.
Il possible means, This work A.
Iust be completed before enlarge
of tunnels can proceed. Two
0nway' mucKers are being used M
load dump trucks with loose DC
laterial evacuated in cuts, In er