b'field superintendents Virgil Allen, George Fortner,ClydeCarrandLawrenceHall took part. Responsibility was then divided, superintendingtheentireproject to Wheeler, the roofing tear off to Fortner, the roofing to Allen,the removalof themechanical equipment and sheet metal work to Carr andthe equipment coHall. At peak periods asmany as150 men worked on the roofing while an additional 3 5 fromthe Humphrey company worked on the drainage. Hall was acutely conscious of possiblecostinflation caused by crews waiting while equipment is being repaired orreplacementequipmentbeingtransported co the job. There were no delays forHall had on the job standby equipment and a supply of parts available to immediately put a piece of damagedequipmentbackintooperation. Hall, not only had responsibility for thetearoffequipmentbuttheroofingOver three hundred lifts were made by this helicopter in moving from roof to ground, equipment.air conditioning and other equipment which cluttered the roof space impeding progress. The onlyequipmentnotunderHall\'s supervisionwerethehelicoptersusedby SuperintendentCarrinmovingthemechanicalequipmentfromtheroofand later replacing it. The efficient andswift removalofthisequipmentaidedSuperintendentGeorgeFortneringettinghis equipment into the act to tear off the roof andthecooperationofallthreeaided SuperintendentAllenintheapplication of the roofing. Removingmechanicalequipment weighingasmuchas3,800lbs.,could have taken days.With theaidof a helicopter,movingtheequipmentfromthe rooftoptoaconvenientstorageareaa quartermile awaytookallofaminute and a half. That, of course, doesn\'t account forthe time takento prepare theheavy machinery for lifting. Three hundred and eightliftsweremadeat atotalcostof $3,000. The Sikorsky helicopter, not only It was impossible to spot hoists and conveyors around the building at convenient locations. This necessitated long hauls on the roof and aconsiderable use of tractors similar la that shown above moving atrain of "high-boys." The vast area of the roofing is illustrated below.'