conversion of historical mining data for use in the vulcan ... · pdf filedata organization...
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Conversion of Historical Mining Conversion of Historical Mining Data For Use in the Vulcan 3D Data For Use in the Vulcan 3D
ModelModel
By Bob Flesher, P.G., and By Bob Flesher, P.G., and Randy Huffsmith P.E.Randy Huffsmith P.E.
May 6, 2010May 6, 2010
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Today’s PresentationToday’s Presentation
u Randy Huffsmith Vice-President CDM Mining Division – Will Discuss the development of the site maps, claim boundaries, Auto CADD Maps and Historic Workings
u Bob Flesher Vice-President of Geology Grant Hartford Corporation – Will Discuss Drilling and Ore Body Modeling using Vulcan 3D
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Project DescriptionProject Description
u The Grant Hartford Corporation
engaged CDM to provide technical,
engineering, and construction
support for the Garnet Gold Project
u Permitting
u Mill Design
u Engineering
u Construction
LOCATION MAP Map Prepared for Montana Department of State Lands Abandoned Mine Reclamation Bureau NCRS Compiled and Edited By Joel Chavez
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Historical Background Historical Background u Underground Mining Began in
1880’s.
u The District Produced 350,000
Ounces of Gold
u Mining Ceased in 1941
u Companies Controlled By The
Charlton Family Have Maintained
the Property Since 1960.
u Pegasus Explored Property in
1980’s to Early 1990’s
u In March 2007 the Grant Hartford
Corporation was Formed
The Nancy Hanks Mine Date Unknown
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Now on to the Technical Now on to the Technical Presentation…….Presentation…….
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Computer ProgramsComputer Programs
u MAP Tek Vulcan 3d Subsurface Mine Software
u ACAD Civil 3d
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Obtain Accurate Topographical SurveyObtain Accurate Topographical Survey
u CDM Engaged the Services of the
WGM Group To Provide a High
Resolution LiDAR Aerial Survey
u About 2000 acres of property
u 2’ contour intervals were created
u High resolution air photos were
obtained
u State Plane coordinates benches
were established
LiDAR Topographical Map of the Nancy Hanks Area
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Survey and Locate ClaimsSurvey and Locate Claims
u Using a Combination Field and
Office Work, WGM and CDM
Accurately Located the Claim
Boundaries on the Topographical
Map
u Claim Boundaries were also re-
established in the field with historic
survey descriptions
u Fencing and other security
measures were established
Topographical Map with Claim Boundaries Shown
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Scanned Image of the Nancy Hanks Scanned Image of the Nancy Hanks Historical WorkingsHistorical Workings
u The Historical Maps came from
Irving and Reichl based upon field
work done by Pardee in early
1900’s
u The Historical Maps Were Scanned
by the University of Montana
Geological Department Under the
Guidance of Dr Sears
u Later Pegasus drill data was added
Scan of the Nancy Hanks
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Scanned Image and Actual Claim Scanned Image and Actual Claim LinesLines
u Place and Locate the Scanned
Images on the Claim and
Topographical Map
Scanned Image and Claim Map Overlain
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Tracings Outlining Historical WorkingsTracings Outlining Historical Workings
u Using ACAD Civil 3D, CDM traced
and verified internal mine workings
u Elevations were assigned to the
tracing lines
Map Showing Tracing Outlining the Historical Workings
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3D View of the Tracings Outlining 3D View of the Tracings Outlining Historical WorkingsHistorical Workings
u The Tracings Are Checked and a
Drawing Exchange File (DXF)
Created for Import into The
VULCAN Model.
u Field Verification of workings and
created model (Bob to discuss)
3D View of the Nancy Hanks Historical Workings
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Data Organization and ImportData Organization and Import
uObtained Vulcan Software from Maptek April 2009.
uBegan data conversion and input
u All Pegasus survey data was converted from the old local coordinate system to the “Modified State Plane” coordinate system and input in to Vulcan.
u Pegasus drilled 147 R/C and 6 core holes from 1989-1992. Over 1300 drill assay intervals were converted and input.
u GHC 2008 drilling included 54 R/C holes with over 1800 assay intervals input in to Vulcan.
u GHC 2009 drilling included 111 R/C holes with over 3900 assay intervals input in to Vulcan.
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Origional Pegasus Drill Holes
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GHC Infill Drilling to Confirm Vein-Structure
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Further drilling was used to define the ore body and create a reserve report. (Ore Body slide)
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Used PGC data to determine drill targets (PGC Hole slide)
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Infill drilling confirmed vein structure and grade (PGC + GHC Hole slide)
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Q & AQ & A