Rimfire Pacific Mining NL announced that diamond core drilling has recommenced at the Sorpresa Development Project, located in the Lachlan Fold Belt. Data from this drilling program will assist in the development of the geotechnical and metallurgical design parameters for the project. The core drilling will provide geotechnical engineering data that will allow the determination of the optimal pit wall slope design parameters for the mine plans. The metallurgical drilling will provide samples for further testing to refine ore processing options. The metallurgical samples will also provide various types of ore and waste samples for geochemical analysis which will form part of the Environmental Impact Assessment (EIA) that is required to obtain the Development Consent from the NSW Government Authorities for the Sorpresa project.