when iron is in contact with aluminium the plate will oxidize brfore the iron ,so I would guess it is an attempt to prevent rusting. best regards steve
--------------------------------- Expecting? Get great news right away with email Auto-Check. Try the Yahoo! Mail Beta.
______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
