CHAPTER Il, SECTION 1
Irwin, James, Janet, Kate, Keith, Leroy, Lucy,
Pearl, Vera, Walt, Wilma, and Yvonne at Eniwetok Atoll; and Fox and Tare Complexes, Able,
How, the ABMA area on How, Item, Jig, Nan,
and Uncle at Bikini Atoll; perimeters only were
accomplished on Able, How, and Uncle. Plane
table surveys were completed on David, Elmer,
and Fred on Eniwetok Atoll.
Hydrographic Mapping
Requirements for hydrographic mapping increased considerably over those of previous
Operations. A second Raytheon fathometer was
acquired to meet frequent simultaneous requests
in both cases were moored off Yvonne, employing the same gear as used in mooring craft for
barge shots. A series of observations were conducted to evaluate the motion of the craft during
a variety of weather conditions. Observations
were also madeto assess the flexure of the craft
structure due to wave and thermal action.
REPORTS AND PHOTOGRAPHY.
The Reports and Photography Section was
responsible for gathering and compiling information necessary for preparing and publishing
various weekly, monthly, and special reports;
for editing, documenting, and publishing the
for both atolls. Crater surveys were required
Jobsite
Eniwetok Atoll. Support was furnished to the
Navy hydrographers in charting the underwater
shot areas, the wide passage at Eniwetok, the
responsibile for maintaining close liaison with
all departments, to ensure complete, accurate,
on a large number of barge station locations at
Camp Blandy area at Nan, and the Tare-Uncle
channelareas.
Microbarograph Stations
Surveying was completed to install Micro-
barograph
Stations at
Fred,
French
Frigate
Monthly
Narrative
Report;
and for
providing photographic coverage of all H&N
activities at EPG. In addition, this Section was
and current reports and photographic coverage
of construction progress, post-shot damage, and
damage from other causes.
Prior to HARDTACK the photographers
performed their duties in the TG 7.1 Photo-
graphic Laboratory, but when plans were firmed
Shoal, Kwajalein, Nan, Rongelap, Rongerik,
Ujelang, Utirik, and Wotho. The REDWING
sensing head at Rongerik was recovered and
monumented but was not used for HARDTACK.
Laboratory for the exclusive use of H&N. With
the installation of a print dryer on 9 May 1958,
Barge and Hull Motion Studies
which was substantially reduced by 19 July 1958.
One barge and one hull motion study was
made using the following method. A typical cab
structure was installed on an Army BC-type
barge or LCU hull, and a mast was installed at
the center point of the barge or hull. This mast
was 100 feet in height, fabricated with 16-inch
pipe butt-welded at the joints, and a 4-inch cube
of concrete was mounted at the top. The craft
up for the new H&N Administration Building,
provisions were made to include a Photographic
the laboratory went into full-scale production
on a backlog of approximately 16,Q90 prints,
During the interim and operational periods,
two Photographers traveled to sites at both
atolls and all Weather Stations. One major
mission performed during the interim period was
the photographic coverage of the Rongelapese
Repatriation Program, which required a total
of 1251 prints to the Home Office and 3808
prints to the AEC.
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