5月20日 - ** Perpetua Resources PPTA.O 股价盘前上涨 2.3% 至 13.06 美元
** 公司称已从美国陆军工程兵部队（U.S. ArmyCorpsof Engineers）获得 (link) 爱达荷州 Stibnite 锑金矿项目的最终联邦许可。
** 五角大楼支持的矿山将成为美国首个锑矿项目
** PPTA 公司称，该项目拥有约 1.48 亿磅的锑储量，在头六年的生产中可满足美国约 35% 的锑需求。
** 该公司称，在项目投产后的头四年里，预计年产黄金 45 万盎司。
** 截至上次收盘，股价年累计上涨约 20
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