Alex G. Doll

METALLURGICAL PROCESS ENGINEER

Grinding system design services and sample collection program design and execution for scoping and feasibility studies.

Plant audits of operating mills for process improvement.

Process design experience in base & precious metals concentrators, oil sand extraction and froth treatment, and nickel/cobalt hydrogen reduction refining

Significant programming experience in process modelling and internet programming in PHP, HTML, MySQL and Java.

Experience:

Independent consultant providing process engineering and computer consulting to the mining industry.

GRINDING STUDY CONSULTANT DJB Consultants Inc. (Ongoing)
Consultant to a senior grinding system specialist performing detailed calculations, data analysis, testwork program development and supervision, and geometallurgical model creation for communition studies. Studies include feasibility design and auditing of existing milling circuits.

WEBSITE DEVELOPMENT CIM Vancouver Branch (2007 - 2008)
Donated a web-based reservation system to the Vancouver branch of the Canadian Institute of Mining and Metallurgy. The Branch uses this website to take reservations for events and process credit card payments. http://www.cimvancouver.org

PEBBLE PROJECT Northern Dynasty (2005 - 2006)
Project engineer performing project management and process engineering for the owner's team of a 220,000 stpd copper-gold porphyry feasibility study. Duties include supervision of multiple engineering contractors; developing project budgets, procedures and policies; and ensuring technical continuity at interfaces between different contractors.

ALBIAN SANDS ENERGY DEBOTTLENECK STUDY Colt Engineering (2004)
Process engineer performing material balance calculations and system database development for a froth treatment capacity expansion study.

PROCESS ENGINEERING SUPPORT Fluor Vancouver (2003 - 2004)
Process engineer support for several study and design projects including a 100 kt/a copper SXEW plant, 5000 t/d silver concentrator, and a 1000 t/d tin washplant.

CNRL HORIZON OIL SAND PROJECT Colt Engineering (2002 - 2003)
Process engineer involved in feasibility study for a 270 kbpcd oilsand mine. Duties include material balance calculations for bitumen extraction and froth treatment process options and support of unit operation selection trade-off studies.

SAGMILLING.COM Comminution web site (ongoing)
Developer of "the Internet's only comminution resource" at http://www.sagmilling.com. Web site contains a series of Java applets for use in solving specialized mineral engineering problems.

MUSKEG RIVER OILSAND PROJECT Process engineer (2000 - 2001)
Process engineer responsible for designing a groundwater collection system including seven wells and a network of approximately 15 kilometres of pipeline. Coordinated numerous outside consultants who provided design checks and conceptual design of subsystems.

Metallurgist involved with project work, feasibility studies, computer development, engineering proposals and operator training systems.

Projects included base metals concentrating, smelting and refining, gold leach plant design, pyrometallurgical plant basic design, creation of computerized tools for metallurgical design engineering and writing computerized plant operator training manuals.

Responsibilities included process flowsheet development, equipment sizing and specification, project feasibility cash flows, computer programming, database development and technical writing.

QNI Roaster Study; Queensland Nickel Pty Ltd, Yabulu, Queensland, Australia (1998)
Coordinated the process design and vendor contact in Vancouver for a 2 Mt/y nickel laterite reduction fluid bed roaster scoping study executed in Brisbane.

Huckleberry Mine Operations Support; Huckleberry Mines, British Columbia (1997)
Assisted post-startup operations at 15,000 t/d copper concentrator including performing laboratory testwork, plant recovery testwork and assisting plant operations.

Ernest Henry Mine Wet Commissioning; Mount Isa Mines, Australia (1997)
Performed on-site water commissioning of process circuits for the 25,000 t/d Ernest Henry copper mine.

Murrin-Murrin Nickel Cobalt Project; Murrin-Murrin Operating Company, Australia (1996 - 1997)
Refinery process engineer responsible for process flowsheet development, equipment specification and sizing, material and heat balances, and process P&ID development for a 45,000 t/y nickel and 3000 t/y cobalt hydrogen reduction refinery. Work included estimation of operating costs, capital costs and participation in HAZOP and cost reduction analyses.

Olympic Dam Modernisation Study; Western Mining Corporation, Adelaide, Australia (1996)
Development of plant-wide material and water balances for the expansion of WMC's existing copper/uranium concentrator, leach plant, copper SX, uranium SX, smelter, electrowinning and electro-refining plant.

Feasibility Studies; Echo Bay Mines Ltd., Vancouver (1995 - 1996)
Process engineer developing conceptual flowsheets, mass balances, equipment selection, tailings disposal and operating strategies for several Echo Bay gold project feasibility studies.

Tambo Mine Primary Crusher Operator Training Manual; Cía. Minera El Indio, Chile (1995)
Lead engineer of computer based bilingual multimedia training manual for Tambo's primary crushing circuit. Work included acquisition of process and procedural information from staff, hypertext document editing, assisting technical translation staff, and creation of hypertext development tools.

Zaldívar SX-EW Plant Training Manual; Compañía Minera Zaldívar, Chile (1994 - 1995)
Lead engineer of computer-based bilingual multimedia training manual for CMZ's heap leach/solvent extraction facility. Work included acquisition of process and procedural information from CMZ staff, hypertext document editing, assisting technical translation staff, and creation of hypertext development tools.

PCT Glycol Facility Training Manual; Pacific Coast Terminals Co. Ltd., British Columbia (1994)
Development of computer-based multimedia training manual for PCT's ethylene glycol rail unloading and ship loading facility.

Grasberg Copper Leach Feasibility Study; P.T. Freeport Indonesia, Irian Jaya (1993)
Relief supervision of copper heap leach/solvent extraction testwork program.

Kennecott Smelter Modernization; Kennecott Utah Copper, California, U.S.A. (1992)
Metallurgical simulation and process engineering for 1.1 million stpy Kennecott/Outokumpu copper smelter.

Languages

Education:

B.A.Sc., Mining and Mineral Process Engineering, University of British Columbia, 1992

Professional Associations:

Member, Canadian Institute of Mining and Metallurgy;
Member, Australasian Institute of Mining and Metallurgy;
Member, American Institute of Mining Engineers;
P. Eng, Association of Professional Engineers and Geoscientists of BC;
Executive Committee Member, Vancouver branch, C.I.M. (1996, 1998, 2001, 2004-2010);
Branch chair Vancouver branch, C.I.M. (2008);
Volunteer presenter with BC Scientists in the Schools program (1990-2001)

Publications:

"Driller - An educational simulator", co-authored by Dr. John Meech, UBC. Presented September 1993 at the CIM District 6 Meeting, Vancouver B.C.

"Refractory Gold Autoclaving". Presented April 1999 to the Perth Branch of the Australasian Institute of Mining and Metallurgy.

Contact:

Address: 314 - 1111 Lynn Valley Rd, North Vancouver, BC, V7J3V4, Canada
Mobile Phone: +1-778-388-2444
Skype: agd.consulting
Email: alex.doll@agdconsulting.ca