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Our Expertise . . .

In Situ  Stress Determinations, Instrumentation, and Limited Access Core Drilling

Agapito Associates, Inc., (AAI) has the equipment and personnel for overcoring, sample coring, and instrumentation installation in limited access, surface, and underground mine locations.

Our Longyear CP-65 drills, USBM Borehole Deformation Gages, and Strain Indicators are portable for difficult access overcoring and are permissible for use in "gassy" mines. 

Additionally, AAI provides services for measuring in situ  horizontal stresses using an innovative down-hole measurement instrument, developed by Sigra, Ltd. of Australia.  The Sigra system is the most advanced biaxial overcore stress measurement system in the world.  Click here for more information:  Sigra IST In Situ  Stress Measurement Tool

Security, safety, and environment are taken very seriously by everyone at AAI.  Our "featured project list" provides examples of our ability to adhere to the specific policies, procedures, and protocols of our clients.

AAI has successfully measured in situ  stress in copper, oil shale, molybdenum, trona, limestone and coal mines, and in tunnels and concrete structures since 1978.  Since 1994, our current staff has completed 527 overcore stress determinations (click here for details).

©Agapito Associates, Inc.

Featured Project List

• Mining Engineering

• Ventilation Engineering

• Highwall Mining

• Blasting & Explosives Eng.

• Solution Mining

• Rock Mechanics

• Rock Testing

• Stress Measurements

• Forensic Engineering

• Geology & Drilling Management

• FMC, Allied Chemical Division, Green River, WY
• Acres International, Amherst, NY
• BHP Billiton, San Juan Mine, NM
• U.S. Bureau of Reclamation, Denver, CO
• Solvay Minerals, Inc., Green River, WY
• Energy West Mining Co., Huntington, UT
• Stone & Webster Engineering Co., Boston, MA
• OCI Wyoming, LP, Green River, WY
• Bowie Resources, Paonia, CO
• Mountain Coal Co., Paonia, CO
• Dravo Lime Co., Butler,  KY

Sigra IST In Situ Stress
Measurement Tool

Project Summaries - Mineral

• Base Metals

• Coal

• Fertilizer Minerals

• Gold

• Limestone

• Oil Shale

• Trona

• Other

Project Summaries - Capability

• Backfill

• Block Caving

• Directional Drilling

• Forensics

• Geologic Studies

• Longwall

• Mine Reclamation

• Overcoring Stress Determinations

• Resource/Reserve Evaluation

• Slope Stability

• Solution Mining

• Subsidence

Overcoring upstream  
face of dam        

Overcoring up from a
4.5-ft wide by 7-ft high gallery

Overcoring horizontally in an
    underground trona mine