Exploration and Property Evaluation

Supporting the Mining and Geothermal Industries Since 1994

Sims Professional Services

Many contributions that Dr. Sims has made for his clients are confidential. Two examples that are not confidential include his development of a structural and geochemical model for low sulfidation epithermal veins in Mexico that led to substantial investment in the company and his work at Red Dog that predicted the location of the Aqqaluk Deposit.

These varied experiences make Dr. Sims highly qualified for metal exploration and property evaluation. He understands how to discover ore and the importance of tons, grade and recovery. He also understand that this is just part of the process. Geotechnical and regulatory limitations, and proper risk management are equally important.

Exploration and Property Evaluation - Metals

Dr. Sims develops regional and near-mine exploration programs. He has worked in many porphyry copper deposits in Arizona, New Mexico and Utah, and has a novel but well-reasoned exploration strategy that he would like to test. He also has extensive experience with ore deposits in areas of extension, such as New Guinea, western Mexico and the western United States. He has discovered ore controlling structures that many others have missed.

He also performs property evaluations for mining companies and investors. This includes evaluation of mineral potential, geotechnical feasibility, land status , and environmental liability.

Services Offered

Sims Professional Services

As an exploration geologist, mine geologist, and engineering geologist, Dr. Sims has worked on metalliferous ore deposits that include sediment-hosted massive sulfide, sediment-hosted gold, gold skarn, porphyry copper and gold, porphyry molybdenum, iron oxide copper gold, and volcanic-hosted precious metal veins.

He discovered early in his career that in many deposit types, and at many scales, structure dictated where ore was localized at the time the deposits formed. He also gained a great appreciation that understanding structure was critical for exploration of deposits that are dissected by post mineral deformation. By perceived necessity, he became an economic geologist with a focus on structure. His M.S. and Ph.D. studies followed these interests and in 1994, when Dr. Richard Call of Call & Nicholas, Inc. contacted the University of Arizona for a student who could map the Cuajone mine in Peru for a bankable slope design study, he was it.

Danny stayed at Call & Nicholas until 2001 and modeled structure and rock strength for numerous ore deposits around the world. Instead of walking across marginal land in search of a deposit, as he had done previously in exploration jobs, he spent eight years buried in the details of rich ore deposits and designing mine slopes as high as 3,000 feet in the adjacent waste rock. Call & Nicholas was ahead of the curve in modeling structural geology for slope design and he learned a lot that he took with him to apply to exploration in Mexico and Canada.

In 2009, Dr. Denis Norton asked Danny to join his team of top-notch geologists and geophysicists in exploration and development work at the Salton Sea geothermal field. This field is underlain by a magma and it is an ore deposit in the making. Danny spent the next six years working on this field and greatly increased his knowledge of geophysical methods, geochemistry, magmatic-hydrothermal processes, drilling and managing a large budget.