Canal crane

6 Camnl Crane. A manually operated crane with a 2-ton electric hoist is provided for the handling of heavy materials in the main canal. The highest hook position is 9 ft 9 in. from the floor.. This provides a clearance of better than 6 ft between the hook and the top of the. parapet.. The hook cannot approach within 33 in of one wall or 43 in. of. the other wall of the canal tunnel. The maximum lift of the hoist is 25 ft 9 in. 

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Because the District of Columbia was able to confirm so many of the representations contained in the memorandum of the phone conversation, the Corps must make a substantial effort to find the burials. Because EPIC has now analyzed the aerial photographs and found no pits near the canal, it is likely that the burials were made in the canal proper while the crane was there for the purpose of rebuilding the towpath. The aerial photograph was taken after water was again allowed to enter the canal and therefore the pits are not visible. 

The NRL has viewed the site and also confirms the appearance of multiple potential burials from the surface topography. They then precisely surveyed the anomalies the District of Columbia had found. With their better equipment, they ruled out all but five of the District s anomalies as potential burial sites. In spite of their good effort, this shows the value of having the best equipment available. It also suggests that the few remaining metallic anomalies were simply river wash debris buried during the towpath reconstruction. Unfortunately, the NRL did not survey the canal because we did not have the photograph of the crane in the canal—and... 

Mechanical removal by cranes was also a successful, albeit expensive, approach, most suited for control of waterhyacinths in flood control canals. 

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