The only honeycomb occurred on the east inside wall of Gamma B and this was cleaned and filJ.edwith qeciti cer=nt grout. Instmment racks were set ti all Gammas by an AEC technician assisted by a szmlJ crew. In all cases, a cushion of cament and limnite only was placed in the slot firSt. This was followed by concrete similar to that used for the Gamma buildings, except that the heavy iron pieces were rep~ced by s/~.inch and Sm811er steal M1lu. The outside form was left open at the top, and a metal plate laid in over the rows of pipes in the instrumentracks was employed to chute the concrete to the rear of the slot. After the slot had been filled to the level.of the first form section, the metal plate was remved and another form section added. The balance of the concrete lmd to be placed in small quantities over the top and along th sides of the rack. When no more concrete could be added, the last section of the form was placed. This section was fitted along its liner edge, but was angled out at the top to provide a trough parallel to and extending above the opening yet to be filled. Concrete was placed in the trough and worked into the o~hg until the trough was filled to a height above the top of the slot. This excess was allowed to remain in the trough and abom four hours later the top form section was removed and the excess concrete chipped off. Following this, the form was replaced over wet burlap to cure the concrete. The blast footings were constructed individuallyutilizing a small crew. Wooden strip templates were employed to hold all bolts and pipe sectione at the top and a met of reinforcing steel was weided to the bottoms. The steel mt was in tun held in place by welding it to form 28 - Section XVI ,—-