Clients

Supporting the Mining and Geothermal Industries Since 1994

Sims Professional Services

Clients Served, Projects and In-House Positions

Red Pin = Mine Design, Slope Stability, Slope Monitoring; Yellow Pin = Mineral Exploration; Green Pin = Geothermal Exploration and Development Drilling

Clients Served by Dr. Sims through Call & Nicholas, Inc., Sims Geological Services, and Sims Professional Services (1994-Present)

Ashburton Ventures, NV, (map and interpret structural control for the Deep Creek precious metal vein system)

ArcelorMittal Sonora, Mexico (training for mine geology, perform oriented core drilling and structural evaluation for the El Volcan open pit iron mine)
Agrium Inc., ID (map and interpret geology for geotechnical feasibility study for the Rasmussen Ridge open pit phosphate mine)
Arizona State Parks, AZ (map and interpret geology for design of access tunnels at Kartchner Caverns)
Arizona Flux Mines Inc., AZ (map and interpret geology in underground mines and the surface at the Ash Peak silver deposit)

BHP, AZ (training for oriented core drilling at Pinto Valley)
Catalyst Geothermal LLC, UT (assessment of the Thermo I geothermal field)
CHAR LLC, ID (assessment of the geothermal potential of the Eastern Snake River Plain, negotiate for state land use permits and project management)
Compania Minera Maricunga, Chile (map and interpret geology for slope design for the Refugio open pit gold mine)
Confidential, AZ (determine geologic and hydrologic controls to show that a major source of contamination is incorrectly identified as a “point source”)

Confidential, AZ (due diligence for purchase of historic mines)

Confidential, AZ (geologic assessment of the Cerbat Mountain Range, near the Mineral Park copper porphyry)

Confidential, AZ (assessment of vein deposits in western Arizona)

Confidential, AZ (assessment of a gold prospect in southeast Arizona for a Regulation D investor)

Confidential, AZ (reverse circulation drilling in the Harquahala District, Arizona)

Confidential, CA (acid drainage study to provide expected levels of contaminates prior to waste stockpile development)

Confidential, CA (Analyze the aquifer and prepare documents to obtain BLM permission to drill a water well under requirements of the Desert Renewable Energy Conservation Plan)
Cyprus Mining Corp., AZ (map and interpret geology for slope design for the Sierrita and Esperanza open pit copper mines)
EnergySource LLC, CA (structural model for the southern San Andreas Fault and the Salton Sea, wellsite geologist)
Freeport McMoRan Inc., Indonesia (map and interpret geology for slope design and mitigation of slope instability for the Grasberg copper/gold open pit; establish structure mapping and interpretation standard operating procedures for mine geologists; training courses; map and model structure for design and fragmentation for the Kucing Liar deposit, map and interpret geology for dewatering of the IOZ and DOZ underground mines in copper/gold skarn, interpret regional structure controls on mineralization in the Ertsberg District)
Golden Queen Mining Co., CA (material characterization for waste rock)

Hycroft Resources Co., NV (map and interpret geology for slope design for the Brimstone open pit gold mine)
Lehigh Southwest Cement, CA (map and interpret geology and perform analysis for limestone quarry slope design and ore pass design; waste stockpile design, road design, training course, management of an exploration drilling and data evaluation program for silica and shale in Redding)
Lehigh Southwest Cement, CA (map and interpret geology for limestone quarry slope design and near-mine exploration at Cupertino)
Minera Alumbrera Ltd., Argentina (slope design training course for geologists)
Minera Aurifera Santa Rosa, Peru (map and interpret geology for slope design for the Comarsa open pit gold mine, slope design training for geologists and engineers)
Olene Gap Geothermal LLC, OR (geothermal exploration for Klamath Falls region)
Phelps Dodge Corp., AZ and NM (mapping and intrepreting geology for feasibility studies, slope design and slope stability for open pit copper mines at Safford, Morenci, Tyrone, Little Rock and Chino)
Rio Tinto Kennecott, Canada (structure mapping training, map and interpret geology for geotechnical feasibility for the Diavik open pit and block cave diamond mines)
Rio Tinto Kennecott, UT (slope monitoring programs at the Bingham open pit copper mine)
Santa Fe Pacific Gold Corp., NV (comprehensive geological map for the Mega Pit and map and interpret geology for slope designs at the Vista and Lone Tree open pit gold mines)
Southern Peru Copper Corp., Peru (training mine geologists, map and interpret geology for bankable slope design for the Cuajone open pit copper mine)
Sunshine Precious Metals Inc., Argentina (interpret geology for slope design for the Pirquitas open pit silver mine)
Superior Ready Mix, CA (map and interpret geology and perform slope design for the TTT, Twin Oaks and Jamacha quarries)
The Winters Company, AZ (map and interpret geology for geotechnical feasibility for the Johnson Camp open pit copper mine)
Thompson Creek Mining Co., ID (train geologists and engineers, map and interpret geology for mine design and mitigation of slope instability, perform slope stability analysis and slope design, supervise dewatering drilling, and near-mine exploration at the Thompson Creek molybdenum porphyry open pit mine)
TMDR Alberhill LLC, CA (geological assessment for aggregate resources)
U.S. Borax/Rio Tinto Technical Services, CA (geology mapping and analysis for slope design, mitigation of slope instabilities, and room and pillar mine rehabilitation at the borax deposit in Boron)

Dr. Sims' In-House Positions Related to the Mineral and Geothermal Industries

EnergySource, LLC, CA, Vice President, Geology (2011-2014),Consulting Geologist (2009-2011) (geothermal exploration and drilled 8 development wells at the Salton Sea. Developed the 50 MW Featherstone Plant)

Paramount Gold and Silver, Inc., AZ, Senior Technical Advisor (2007-2009) (developed regional structural geology model and supervised 43-101 reporting and assay QA/QC in the Sierra Madre region of Mexico; exploration for gold skarn in BC Canada)

Ryley Carlock & Applewhite, AZ, Associate Attorney (2005-2006)

Adjunct Assistant Professor, Department of Mining and Geological Engineering, University of Arizona (2003) (developed curriculum and taught the Geological Engineering Field Camp)

Call & Nicholas, Inc., AZ, Senior Geologist and Shareholder (1998-2001), Associate Geologist (1994-1997) (mapped and interpreted geology for design of pit slopes, underground mines, roads, tunnels and stockpiles; worked closely with engineers on analyses; drilled oriented and standard core; and trained geologists and engineers at mines)

Cominco American Inc., Red Dog Mine, AK, Geologist and Funded Ph.D. Research (1991-1995) (petrography study to explain poor recovery and modeled stratigraphy, structure and geochemistry to predict the location of the nearby Aqquluk Deposit)

Cominco Alaska Exploration, AK, Geologist (1989-1990) (exploration for gold and base metal deposits throughout remote areas in Alaska)

Newmont Exploration Ltd., NV, Geologist (1987-1988) (exploration for gold and mapping historic underground mines throughout northeastern Nevada)