EE'S WERE HYDRAULIC MINING A FINE COAL RECOVERY POND WHEN A SLOPE FAILURE OCCURED CAUSING MATERIAL TO FALL TO THE WORKING AREA OF THE PIT. A STUDY WAS PERFORMED INDICATING FAILURE OCCURRED DUE TO OVERSTEEPING OF FACE DURING OPERATIONS. THE SLOPE MAY HAVE FAILED DUE TO COMBINATION OF HYDRAULIC MINING AND THE PROXIMITY OF AN EROSION CHANNEL ADJACENT TO THE SLOPE FAILURE.