Jean Robic
... that Jean Robic, winner of the 1947 Tour de France, was so light that at mountain summits he was handed lead and mercury-ballasted drinking bottles for gravity-assisted descents?
... that <b id="mwGQw"><a href="./Jean_Robic" id="mwGQ0" rel="mw:WikiLink" title="Jean Robic">Jean Robic</a></b>, winner of the <a href="./1947_Tour_de_France" id="mwGQ4" rel="mw:WikiLink" title="1947 Tour de France">1947 Tour de France</a>, was so light that at mountain summits he was handed <a href="./Lead" id="mwGQ8" rel="mw:WikiLink" title="Lead">lead</a> and <a href="./Mercury_(element)" id="mwGRA" rel="mw:WikiLink" title="Mercury (element)">mercury</a>-ballasted drinking bottles for gravity-assisted descents?