Hi, Phil Nutting wrote: > And what about all those lead keels on sailboats? Will they have to > shift to a zinc alloy? Not really, depleted uranium seems to work OK. Same in armour piercing shots and aircraft counterbalances. http://en.wikipedia.org/wiki/Depleted_uranium Indrek -- Indrek Rebane Borthwick-Pignon OÜ, R&D Riia 185, 51014 Tartu, Estonia Phone: +372 7 302 641, Fax: +372 7 383 041 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------