Hycroft Mine Exploration
Drilling at Hycroft began in 1966 for native sulfur with gold and silver reported at depth in several holes in 1974. Starting in 1977, drilling switched targets from sulfur to precious metals with sporadic drilling by various owners up to 1985 when HRDI gained control of the property and began an aggressive campaign including 3,212 holes to identify shallow run-of-mine heap leachable material.
In 2006, the operation was restarted and an aggressive drill campaign commenced with a goal of identifying potential expansion areas and mineralization at depth. In 2008 the Vortex discovery hole was drilled indicating a large sulfide resource with significant gold and silver intercepts. The drill program from 2008 to 2013 focused on development of this area which now represents a significant portion of the total deposit. Step-out drilling during the 2008 to 2013 time frame also indicated continuity of mineralization to the south, including potential for near surface mineralization. Very limited drilling has taken place since 2013, with only a few holes being drilled for condemnation or metallurgical samples. From 1981 to the end of 2018, 5,501 holes had been drilled representing 2,482,722 feet of drilling. The deposit is drill limited and remains open in all directions and at depth.