Ray L. Roripaugh

• Supported Palmarejo Gold and Silver team and received Mining Journal Outstanding Achievement Award for Exploration in 2005.

Applied deep knowledge of Temoris District prospectivity over ten years, guiding targeting of Don Ese vein system, later named Independencia by Coeur d'Alene Mining.

• Logistical and technical support for large advanced exploration camp.
• Surveyed 250 km of geophysical lines and drill holes.
• Noche Buena Project - Sonora, Mexico

• - Established office presence in San Ramon, Bolivia, and managed purchasing activities for tantalite ores and concentrates.
• - Directed large topographic survey across Andes, coordinating local labor for field execution.

• Underground geologic mapping and sampling led to the discovery of 200,000 ounce gold resource at Cerro Sapuchi.
• Directed district-wide soil sampling program; managed excavation and bulk sampling of an exploration drift into Mina California sulfide ore.

• Logged rotary cuttings on various precious metal and copper oxide projects; developed reliable nail test for determining copper oxide grades and initial leach kinetics.
• Geologic mapping at the Noche Buena Project, Caborca, Mexico.
• FMC Gold, AZCO Mining, Newmont, Western States Mining and USMX - Arizona, Nevada, Sonora and Guerrero, Mexico

• - Supported survey work at Illipah Mine, then moved into mine geology role at EZ JR. Mine after interpretation of structural and stratigraphic setting identified additional gold reserve potential.
• - Assisted with in-fill drilling for Pilot Knob deposit at Kimberly, Nevada, re-logged drill holes, and built geologic model that matched later production results.
• - Received strong supervisor endorsement from Chief Geologist Tony Dorff, citing thorough knowledge of open cast mining operations and value to any team seeking experienced mine geologist.

• Bulk sampling of gold placers using large diameter drilling techniques in Quaternary and Tertiary formations.
• Photogrammetry survey control for Illipah, Randsburg, Searchlight, Oro Blanco, Little Hills Copper and Piedras Verdes.
• Peter Kiewit and Sons, General Mining - Nevada, Mexico and Yukon Territory.

• Grass roots project generation, four projects drilled.
• Directed the evaluation of numerous gold placer projects in Arizona.
• Arizona, California and New Mexico