Someone told me that one of the greatest expenses ranges have is in controlling ventillation and any possible issues with airborne lead and mercury compounds. For as infrequently as I go (so far about 1 hour a month), I'm not really too concerned.
As far as residue on your hands, I think washing with soap is all that is needed. While injestion of lead is never good, trace amounts are not going to kill you. Just my $.02 worth.
"I have obviously failed to galvanize and prod, if not shame enough Americans to be ever vigilant not to let a Chicago communist-raised, communist-educated, communist-nurtured subhuman mongrel like the acorn community organizer gangster Barack Hussein Obama to weasel his way into the top office of authority in the United States of America."
– Ted Nugent