Core Insights - BHP is considering reopening four dormant copper mines in Arizona due to a favorable shift in US government policy that supports the extraction industry [1][2] - The company is aligning its strategy with US initiatives to secure critical minerals and compete with China, particularly in the context of rising copper demand [2][4] - BHP is also exploring the reprocessing of tailings waste from these sites, driven by higher copper prices and new US policies [3] Company Strategy - BHP's market capitalization stands at $140 billion, with a strategic shift towards copper as demand rises, moving away from its primary revenue source of iron ore [4] - The Resolution Copper project, a joint venture with Rio Tinto, is under discussion, pending court decisions before development can proceed [4] Economic Viability - US tariffs on commodities have made domestic mining more economically viable, although BHP's CEO suggests that legislative approval of tariffs would provide more certainty for long-term projects [5] - The company has initiated fresh exploratory drilling in Arizona's Globe-Miami area, indicating a proactive approach to resource extraction [3]