FIGURE 6-4, WINDROWS OF BRUSH ON ISLAND JANET. View to the west from the top of GreenhouseStation 3.1.1.
soon after windrowing was completed. (August 1977)
6.5.2
Lane Cutting
Early devegetation experiments on Janet clearly indicated that a more expeditious method would
have to be found for preparing an island for the coarse-grid IMP survey. Total removal of brush
consumed too many man and machine resources, was too slow, introduced too much soil disturbance,
and was not necessary for measurement of 24l aim gamma emissions. The last areas on Janet to be
prepared for IMP access were not heavily vegetated so the bulldozer operator was instructed to push
aside only that brush which interfered with line-of-sight surveying and staking by the Army
engineers. When work began on Pearl, the second island to be gamma scanned, clearing of access
lanes, rather than total brush removal, became standard procedure; however, several months of fine
tuning was required before a method of lane clearing was developed that was accepted by ail
concerned agencies (Figure 6-6).
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