Trump signed proclamations raising the U.S. tariff rate on aluminum to 25% from his previous 10% rate and eliminating country ...

Alcoa Corp.(NYSE:AA), a leading U.S. aluminum producer, has made a $2.2 billion offer to acquire Alumina Ltd (OTCQX:AWCMF), its Alcoa World Alumina & Chemicals (AWAC) joint-venture partner.

U.S. President Donald Trump says he'll announce 25 per cent tariffs on all steel and aluminum imports into the United States ...