Edward Isaaks, Ph.D.
Professional
summary
Dr. Isaaks has 15 years of experience in technical
evaluations, exploration property evaluations, research, and design and
management of ore reserve assessment programs in North America and overseas.
Education
Ph.D., Geostatistics, Stanford University, CA, USA
M.Sc., Geostatistics, Stanford University, CA, USA
B.Sc., University of British Columbia, Canada
Memberships
Society of Mining, Metallurgy and Exploration.
International Association for Mathematical Geology
AusIMM
Association of Professional Engineers of Saskatchewan (not
current because of residency requirements).
Summary of
core skills
Reserve audits and fatal-flaw, due diligence evaluations.
Resolution of ore reserve/production reconciliation problems. Design of grade
control programs. Ore resource and ore reserve modelling.
Employment history
Consulting Geostatistician, 1992-present.
Geostatistician, MRDI, 1991-1992.
M.Sc. and Ph.D. Student 1982-1991
Project Geostatistician, Esso Resources 1980-1982.
Mine Geologist, Cassiar Asbestos 1977-1980
Seasonal Exploration Geologist, Canadian North, 1968-1977
Isaaks & Co. (sole proprietor)
Tintaya Mine, BHP Billiton Tintaya S.A., 2000: Review the ore reserve modelling methodology
and design DDH patterns to prove the ore reserves at several satellite
deposits.
Diavik, Diavik
Diamond Mines, NT, Canada, 1999: Implementation of conditional simulation for
the estimation of diamond resources.
Monywa, Ivanhoe
Holdings, Myanmar, 1996-1997: Member of the MRDI feasibility study team for a
copper heap leach project.
Turquoise Ridge,
First Miss Gold, NV, USA, 1995: Member of the MRDI feasibility study team for
vein gold.
Radomiro Tomic,
Codelco Chile, 1998: Extensive
review of the long term ore reserve model for the purposes of improving
prediction accuracy and increasing confidence in the ore reserve model for
expansion plans.
Chuquicamata,
Codelco Chile, 1998: A study on
the impact of variable bench height on minable reserves as part of a larger
engineering feasibility study for the expansion of mining operations.
Chuquicamata,
Codelco Chile, 2000: An
extensive review of the Chuquicamata long term ore reserve model for the
purposes of improving local accuracy for long term mine planning and expansion
studies. Also updated the Moly model.
Chuquicamata,
Codelco Chile, 1997: An
extensive review of the transition zone - low grade sulfide ore reserve model
for the purposes of resolving a major reconciliation problem between model
predictions and production figures.
Confidential
Acquisition Target, Codelco Chile, 1999: Due diligence study on the geologic and mineral resource
model for a possible acquisition target.
North Oxides,
Chuquicamata, Codelco Chile, 1998:
A review of the geologic model using geostatistics and indicator kriging. The
objective was to prepare a geologic model with unbiased geologic units in terms
of contained ore tonnages.
Radomiro Tomic,
Codelco Chile, 1997: The design
of a mine plan for the separation of three oxide ore types at the time of
mining. The design was based on a conditional simulation model of the oxide ore
types at Radomiro Tomic.
Radomiro Tomic,
Codelco Chile, 1998: Provided a
geostatistical assessment of the uncertainty associated with predicting minable
reserves at Radomiro Tomic.
Radomiro Tomic,
Codelco Chile, 2000: Review of
the short term mine planning ore reserve model for the purposes of resolving a
reconciliation problem between the model predictions and production.
San Antonio Project,
Codelco Chile, 1997: Audit of copper resource models.
Agua Rica Deposit,
BHP, Argentina 1998: Prepared
the ore resource model for a pre-feasibility study of the Agua Rica Copper and
Molybdenum Deposit in Argentina.
Robinson Copper-Gold
Deposit, BHP, Nevada, 1996:
Technical review of the grade control procedure for the purposes of reconciling
differences between the short term model predictions and production figures.
San Manuel Copper
Deposit, BHP, Arizona, 1996:
Technical review of the underground ore reserve model.
Florence copper
deposit, BHP, Arizona, 1996:
Technical review of the ore resource model for a proposed in-situ leach
project.
Sur Sur Deposit,
Andina Mine, Codelco Chile, 1997:
A Geostatistical review of the Sur Sur copper ore reserve model for the
purposes of reconciling production figures with model grade estimates.
Mary-Drinkwater
Deposit, Mineral Ridge Resources Inc.1995: Prepared the pre-feasibility gold ore resource model for
Mineral Ridge. This work was done through MRDI.
Meikle Deposit,
Barrick Goldstrike, Elko, Nevada 1998: Variography and conditional simulation of the Meikle
deposit to evaluate and confirm production schedules.
RoseBud Mine, Hecla
Mining, 1998: Technical review
of the ore reserve model (gold deposit), re-did the variography and implemented
geostatistical methods for ore reserve modelling and estimation.
Lucky Friday Mine
(poly-metallic), Hecla Mining, 1998: Design of a diamond drill pattern for the purposes of
enabling the classification of mining reserves as proven and probable.
Gold Hunter South
Vein, Hecla Mining, 1998:
Technical Review of current methodology used to prepare ore reserve model and
implemented new estimation methods.
Meridian Gold
Project, Standard Bank of London, 1999: Due diligence evaluation of a potential acquisition target
by the Meridian Gold Project.
Ray Mine, Asarco
Inc., 2000: Technical review
and re-calculation of ore reserves using conditional simulation.
MRDI
Jerritt Canyon, FMC Gold, NV, USA, 1991:
Participated in the reserve audits for Carlin-type Gold.
Refugio, Bema Gold, 1991: Geostatistician member of MRDI feasibility study team for
the Refugio Verde Deposit.
Lone Tree Gold Mine, Santa Fe Pacific, 1995: Review
of long term ore reserve model for the purposes of resolving reconciliation
problems between model predictions and production figures. Re-designed and
implemented a new grade control procedure.
Andacollo, Canada Tungsten, Chile, 1994: Geostatistician, participated in the reserve audits for
porphyry copper.
Fort Knox Gold Deposit, Fairbanks Gold Mining Inc. 1994: Technical review of the ore resource model.
Validated the ore reserve model and production schedule predictions for a
feasibility study using a conditional simulation model of the deposit.
Lihir Gold Deposit, Kennecotte Copper, 1991: Prepared a conditional simulation model of the
ore resources to validate the proposed mine plan and production schedule for
the feasibility study.
Greens Creek, Kennecotte Copper, 1992: Technical review of the ore resource (poly
metallic) model. Prepared new resource model using geostatistical methods.
Voisey Bay, Confidential client, 1993: Technical review of Nickel-Cobalt- Resources as potential acquisition target.
Malawi, CEGB, 1990: Modelled the uranium geologic resources
of the Kayalakara deposit for the purposes of a feasibility study.
Consulting
Projects while doing Graduate work at Stanford
Stillwater, Stillwater Mining, MT, USA, 1983: Implementation of indicator geostatistics for modelling of
platinum-palladium reserves.
Canada
Wide Mines (Esso Resources), 1980-1982
Midwest Lake, Saskatchewan, Canada: Project Geostatistician responsible for modelling the
uranium and nickel arsenide ore reserves of the Midwest Lake deposit. I Also
built a conditional simulation model of the uranium and nickel arsenide
mineralizations for the purposes of designing a mining – stockpile –
reclamation plan to achieve an acceptable blend of mill head grades.
Cassiar
Asbestos 1977 - 1980
Cassiar, Northern B.C., Canada: Mine
Geologist with primary responsibilities for grade control (production); annual
infill DDH drilling and updating the ore reserve model; and summer exploration
programs in the immediate area of the mine. Managed a 2000 foot exploration
drift for the purposes of intersecting and diamond drilling the ore deposit at
depth.
Seasonal Exploration Geologist 1972-1977:
Lytton Minerals 1967-1968: Summer exploration
programs for base metals in the Cassiar Mountains, Northern British Columbia.
J.S. Vincent 1969-1970: Summer exploration programs for lead-zinc in the Anvil
Range, and for base metals in the Kluwani Range, Yukon T.
PUBLICATIONS:
Books
Isaaks, E.H. and Srivastava, R.M., 1989, An Introduction to
Applied Geostatistics, Oxford University Press, New York, 561 p.
Thesis
The application of Monte Carlo methods to the analysis of
spatially correlated data, Ph.D. thesis, Stanford University
Thesis
Risk qualified mappings for hazardous waste sites: A case
study in distribution free geostatistics, M.Sc. thesis, Stanford University.
Reviewed Papers
Isaaks, E.H. 2004, “The
kriging oxymoron: Conditionally unbiased and accurate prediction ( 2nd Edition), submitted for
publication in the proceedings of the 2004 Geostat Congress.
Isaaks, E.H. and Srivastava, R.M., 1988, ``Spatial
continuity measures for probabilistic and deterministic geostatistics'',
Mathematical Geology, vol. 20, no. 4, p. 313-341.
Journel, A.G., and Isaaks, E.H., 1985, ``Simulation of
mixed mineralizations: Application to a Saskatchewan Uranium Deposit'',
Mathematical Geology, vol. 17, no. 1, p. 1-15.
Isaaks, E.H., 1983, "Indicator Simulation: Application
to a Saskatchewan Uranium Deposit'', in G. Verley, et al (ed.) Proceedings of
the NATO Advanced Study Institute, D. Reidel, Dordrecht, Holland.
Received the Best Paper Award for a presentation at the
1987 Mathematical Geologists of United States Conference in Redwood City,
California.
