Aug 21 (Reuters) - Paladin Energy Ltd PDN.AX :
* Paladin to retain Langer Heinrich
* COUH has informed Paladin it has decided not to exercise potential option
* Refers to announcements regarding potential option for CNNC Overseas Uranium Holding to acquire co's 75% interest in Langer Heinrich mine
* Expects to remain in trading suspension for at least such time as it takes to resolve administration process and potentially longer