Perpetua rises on US nod to begin construction on Stibnite mine

** Shares of mining company Perpetua Resources PPTA.O up 2% at $17.8 premarket

** Company receives conditional notice from U.S. Forest Service (USFS) to proceed with construction of its Stibnite gold and antimony project

** Notice says project may begin construction conditioned only on PPTA posting joint financial assurance bonding agreed to by USFS, Idaho Department of Lands and U.S. Army Corps of Engineers

** Mine is expected to supply more than 35% of annual antimony needs in U.S. by 2028 and produce 450,000 ounces of gold per annum

** As of last close, stock up 63% YTD