July 21 (Reuters) - Cuesta Coal Ltd CQC.AX :
* Unsecured loan is now due for repayment by the 12th August 2016
* Says interest rate of 6% continues to apply
* Says it has reached agreement for an extension of twelve (12) months for the repayment of the $2.5M loan
* Source text for Eikon ID:nASX2c5d5m