Lefroy Exploration Limited, formerly U.S. Master Holdings Limited, is engaged in the gold and nickel exploration at its Lefroy and Lake Johnston Projects that are located in Western Australia. The Company's Lefroy Project is located to the south east of Kalgoorlie, and the Lake Johnston Project is located approximately 120 kilometers (km) to the west of Norseman. The Lefroy Project consists of granted tenure, covering approximately 550 square kilometers. The Company has initiated exploration for nickel at the Lake Johnston project. The Company has approximately two exploration licenses at Lake Johnston. The Company has recognized approximately five gold mineralized trends within the project area where drill-ready prospects have been defined. The Lake Johnston Project is located in the Southern Cross Province.