MELBOURNE, Feb 13 (Reuters) - Australian miner South32's ( SHTLF )
CEO Graham Kerr said on Thursday he viewed U.S.
President Donald Trump's tariffs on aluminium as a negotiating
tactic rather than a long-term policy of his administration.
"The challenge with all the tariffs is how long does it last
for ... I don't think anyone knows," Kerr said on an earnings
conference call.