Feb 13 (Reuters) - St Barbara Ltd SBM.AX
* St Barbara to buy back final us$20m of senior secured notes
* St Barbara to extinguish final us$20 million of senior secured notes and be effectively debt free1
* Company has repaid total principal of approximately a$436 million (us$325 million) of debt from its cash flows
* Note repurchase will be funded from us dollar cash reserves generated from us dollar gold sales. Source text for Eikon: ID:nASX63CBbn Further company coverage: SBM.AX