David Johnson is a Senior Geologist and the President of Bronco Creek Exploration. His responsibilities at Bronco Creek Exploration include business development, land acquisition, target development, day to day business affairs as well as playing a significant role in the "SW North American Porphyry Copper Exploration Program". Since 1992 Dr. Johnson has been a consultant in regards to exploration for both base and precious metals where responsibilities included data compilation and synthesis, conceptual and field-based target generation, and property evaluation for a number of companies including BHP, Western Mining Co., Mount Isa Mines and Phelps Dodge. Mr Johnson graduated from Colorado College with a B.A., Major in Geology in 1988 and later earned his Ph.D. from the University of Arizona.