ATHA Energy (TSXV:SASK) has revealed it has entered into a joint venture agreement with Terra Uranium (ASX:T92)The letter of intent is for the purpose of a potential joint venture on uranium exploration projects in the Athabasca Basin in SaskatchewanThe deal will see Terra Uranium potentially acquiring 70 per cent interest in ATHA’s Spire and Horizon properties while ATHA could acquire up to a 60 per cent stake in Terra’s Uranium Pasfield Lake propertyShares of ATHA Energy are down 4.69 per cent to C$0.61 as of 11:10 a.m. ETATHA Energy (TSXV:SASK) has revealed it has entered into a joint ventu…