Mining

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138kV Substation OCM Replacement

Sierrita, AZ

Civil, Electrical, and Structural design consisted of replacing two obsolete 138 kV oil circuit breakers (OCB’s) located in FMI Sierrita’s 200MW main substation with new SF6 breakers. The existing electro-mechanical relays for the OCB’s were replaced with new Schweitzer relays…
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Old Mill Switchyard

Marana, AZ

Civil, Electrical, and Structural design of 15MVA 15kV Electrical Switchyard. Work included specifying, reviewing, and including geotechnical evaluation into design. Civil design included grading site, controlling storm water runoff/erosion, and 7' fence with 3 strands of barb…
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Mammoth Phase 2

Marana, AZ

Silver Bell Mine (SBM) hired Sverdrup Engineering Services to design the phase II intermediate raffinate pump station for the Mammoth Heap Leaching facility in the Mammoth Wash area. SBM distributes Raffinate leaching solution via a pipeline from the Main Raffinate Pond, located…
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Hayden Outside Lighting Project

Hayden, AZ

Designed and oversaw construction of 56 Eaton Lumark LED outdoor lights with approximately 32,000 lumens each. A lighting analysis was performed in DIALux Version 7.1, a software program that calculates foot-candle (fc) distributions for any given user-defined area. The analysis…
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