Subsidence

Energy West Mining Company In preparation for longwall mining beneath a 345-kV electrical transmission line, AAI was retained to evaluate the impacts of surface subsidence to a series of power [...]

Longwall Gateroad Analysis AAI performed a comparative stability evaluation for the East Longwall Panel 8 Gateroads.  Four different gateroads were analyzed, including three- and four-entry [...]

West Ridge Resources, Inc. (WRRI) commissioned Agapito Associates, Inc. (AAI) to analyze subsidence potential from planned longwall mining in the vicinity of the Grassy Trail reservoir adjacent [...]

Engineering Support for Start-up of Large Underground Coal Operation—Trinidad, Colorado Starting in 2009 and continuing into 2011, Agapito Associates, Inc. has provided most of the mining [...]

Southern Electric International (SEI) AAI was retained by SEI to assess the subsidence potential of the Central Avenue Property in Wyandotte, Michigan, which is underlain by extensive [...]

Solution Mining of Nahcolite Natural Soda took over operations at White River Nahcolite in 2003.  AAI has continued to support the operations in permitting, ground control, cavern development, [...]

Solution Mining of Nahcolite NaTec/White River Nahcolite (WRN) was the first solution mine developed to recover soluble minerals from thin horizontal beds using long horizontal wells. AAI [...]

American Soda, L.L.P. Agapito Associates, Inc. has been actively involved with the American Soda Project from 1997 through 2003. Major projects include: Stability assessment of pilot test cavern [...]

Molybdenum ore is mined by block caving methods at Molycorp’s Questa Mine.  AAI has provided geotechnical consulting services to the mine since 1979 as follows: Evaluation of decline rock support [...]

West Elk Mine—Somerset, CO AAI has provided underground geotechnical engineering services to Mountain Coal Company’s West Elk Mine since the 1980s.   Services include installation of geotechnical [...]

Canyon Fuel Company Longwall Mining—Shield Support Densities AAI has performed a full range of geotechnical analyses for SUFCO in support of their longwall operations, including pillar design, [...]

American Rock Salt Company, LLC The objective of this work was to calibrate the in situ properties of the overburden and mining horizon salt to reasonably reproduce measured subsidence and room [...]