QUALITY
SERVICE IS OUR FIRST PRIORITY
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MINING
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MINE
STABILITY
SGSI
has supported the minerals extraction industry with rock mechanics
and rock stabilization both on the surface and underground.
SGSI led a program of core and rotary drilling, instrumentation
(including Time Domain Reflectometry), and analysis, including
numerical computer modeling, for the Cove Mine pit slope failure
in Nevada. SGSI also led the pre-mining slope stability and
design investigation at Eldorado Gold's La Colorada mine expansion
near Hermosillo, Mexico. |
Iron Mountain Mine, CA |
SGSI
personnel have completed numerous ground control studies for coal
and metal mining throughout the U.S. These studies have entailed
research, in situ testing, measurement of ground stress and stress
changes, laboratory geomechnaics testing, down hole logging and
core drilling, and numerical computer simulations. We have also
provided conventional geotechnical services in support of mine
infrastructure improvements, such as mill and concentrator expansions
requiring heavy machine foundations, and ore loading facilities.
SGSI personnel have provided reserves estimates and mine planning
support, using computer programs such as Medsystem and other geologic
software. SGSI offers the latest in computer analysis for underground
and surface mine stability, including finite difference, finite element,
boundary element, and limit equilibrium codes.
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ABANDONED
MINES
Engineering
Services for Abandoned Mine Remediation
SGSI personnel
have been providing abandoned mine related services since the
early 1980s. We have served OSM, the U.S. Forest Service, the
U.S. Bureau of Mines, and many State agencies in issues of acid
mine drainage abatement, instabilities arising from subsidence,
highwalls, and mine waste embankments; and many other environmental
and physical safety issues. Our staff has background in research
as well as remediation. Many of our clients are interested in
SGSI's capabilities in rock excavation and rock blasting.
Representative
abandoned mine actions in which we have been instrumental: |
| Iron
Mountain, CA: AMD handling, underground
excavation, design, and construction; stability assessment;
Site Safety Plan, and underground mapping and surveying at
this large Superfund site; |
Iron Mountain Mine, CA |
| Arabian
Mine, AZ: Physical inventory, Site Safety Plan, underground
geologic mapping and surveying; cross-hole geotomographic interpretation,
physical hazard abagtement; and expert witness services related
to subsidence investigation (below a busy State highway) for
this partially flooded underground gold mine; |
Arabian Mine, AZ |
| Golinsky
Mine, CA: Physical inventory, bulkhead conceptual design,
AMD treatment concepts and design; geologic mapping, underground
stability assessment, historical documentation and records review
for this partially caved gold/metal mine within the Shasta National
Recreational Area; |
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| Keystone
Mine, CA: Physical inventory and new shaft access for this
partially flooded underground gold mine to assess the potential
for alternative bulkhead locations; |
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| Heltsley
property, IN: Subsidence investigation, borehole camera
work, and grouting/backfilling program design for this highly
unstable shallow coal mine affected by pit subsidence; |
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| Mystic
Mine, AZ: Physical inventory and inspection, hazard abatement,
and closure concepts for this open-stoped gold mine. |
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