From: spam@merlyn.demon.co.uk   
      
   JRS:  In article <41C5BC35.5060900@wolfkeeper.plus.com>, dated Sun, 19   
   Dec 2004 17:36:53, seen in news:sci.space.tech, Ian Woollard   
    posted :   
   >   
   >The problem is weight. The elevator will have a design limit on weight,   
   >and every kilogram of shielding is a kilogram less of payload. The   
   >overall shielding mass turns out to be many tonnes. This raises the   
   >effective cost of the remaining (human) payload.   
   >   
   >Still, if useful supplies were used as the radiation shielding, then no   
   >loss of payload occurs. In practice, the supplies are likely to out mass   
   >the humans anyway.   
      
      
   Well, the humans might want to be shielded when coming down that way;   
   though they could elevate part-way down from GSO and then step off.   
   .   
      
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