424 RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL Runit, aggregate from an old stockpile on Enjebi was used. In Novembe, 1977, the JTG began quarry operations at the site designated in the quarry permit issued by POD, i.e., on the reef just south of the Runit hotline (Figure 8-17). Quarry operations were constrained by the time and height, of tides which did not always coincide with normal working hours, [, December 1977, permission was granted to billet troops overnight op South Runit to facilitate quarrying at low tide and to save timelost jp commuting from Lojwa Camp.*! A crushing and screening plant, obtained from existing Department of Defense (DOD) assets, was installed near the quarry. Its capacity was morethan adequate to keep the project supplied with aggregate (Figures 8. 18, 8-19, 8-20). Crushed coral rock was processed and separatedinto four sizes: 1-1/2 inches and larger, 3/4 to 1-1/2-inch aggregate, 3/4-inch to number 4 aggregate, and fines. The latter three sizes were used for the production of clean concrete. When the plant began operations, the aggregate was washed, but this step was later dropped as unnecessary. The Commander, JTG (CJTG) was able to work around manyofthe planning and scheduling constraints on Runit site preparation. Runit construction also was constrained by shortages of plumbing andelectrical supplies caused by a severe winter in the eastern United States, as was other camp construction at Enewetak. Nevertheless, Runitstockpile sites were ready to accept contaminated debris and soil from the otherislands FIGURE 8-17. QUARRY ON RUNIT. |