Alex G. Doll



Secondary Crushing Synergies with the Mount Milligan BAG Mill”
co-authored by Joel Yue (Centerra Gold Corp) and Kelvin Lee (Hatch Limited). Presented at the SAG Conference 2023 in Vancouver, Canada

"SAG Milling - Past and future"
presented at the III International Conference on Minerals Size Reduction, December 2023 in Lima, Perú.

"Secrets of the Bond ball mill grindability test"
co-authored by Vladimir Nikolić (University of Belgrade) presented at the Procemin·GEOMET Conference, 2022 in Santiago, Chile.

co-author "A new methodology to obtain a corrected Bond ball mill work index valid with non-standard feed size"
Primary author Vladimir Nikolić (University of Belgrade), co-authored by Alex Doll, Milan Trumić (University of Belgrade); Minerals Engineering 188 (2022) 107822

"A simple method of assessing ball mill health using Bond tests and Functional Performance"
co-authored by A. Morneau, J-F. Dupont (Detour Gold Corp) and D. Michaud (911 Metallurgy) presented at the 52nd Annual Canadian Mineral Processor’s Conference, 2020 in Ottawa, Canada.

"Bond's work index: What it is and what it isn't"
co-authored by Berge Simonian (Centerra Gold – Mt. Milligan mine) presented at the SAG 2019 Conference in Vancouver, Canada.

"Designing an optimal comminution sampling program for geometallurgy"
presented at the 14th Int. Mineral Processing Conference (Procemin-GEOMET 2018), Santiago, Chile.

"Power-based modelling of single-stage AG and SAG mill circuits"
co-authored by Miguel Becerra (Anglo American T&S) presented at the 13th Int. Mineral Processing Conference (Procemin-GEOMET 2017), Santiago, Chile.

"Five technologies we should be using more of in Canada"
presented at the 2017 CIM South-Central Branch AGM & Conference Kamloops, Canada.

"Fine Grinding, A Refresher"
Presented at 49th Annual Canadian Mineral Processors Operators Conference, 2017 in Ottawa, Canada

"A public Database of tumbling mill grindability measurements and their relationships"
presented at the 12th International Mineral Processing Conference (Procemin 2016), Santiago, Chile.

"An updated data set for SAG mill power model calibration"
presented at the XXVIII International Mineral Process Congress (2016), Quebec City, Canada

"The engineering and process effects of choosing a motor design speed"
co-authored by Kurt Tischler, Process Industries and Drives, Siemens AG
Presented at the SAG 2015 Conference in Vancouver, Canada.

"A simple estimation method of materials handling specific energy consumption in HPGR circuits"
Presented at 47th Annual Canadian Mineral Processors Operators Conference, 2015 in Ottawa, Canada

"A comparison of SAG mill power models"
Presented at Procemin 2013 conference in Santiago, Chile.

co-author "Mineral Slurry Pipelines for Rugged British Columbian Terrain"
Primary author: Brad Ricks, Brass Engineering International
Presented as the CIM Maintenance Engineering and Mine Operators conference (MEMO 2013) in Kamloops, Canada.

"Grinding: Why So Many Tests?"
co-authored by Derek Barratt, DJB Consultants, Inc.
Presented at the 43rd Annual Meeting of the Canadian Mineral Processors, 2011 in Ottawa, Canada.

"Microcracking versus the Phantom Cyclone; Comparing SAG Mills and HPGR on a Consistent Basis",
co-authored by Derek Barratt, DJB Consultants, Inc. and Ricardo Godoy, Anglo American Norte.
Presented at Procemin 2010 conference in Santiago, Chile.

"Case Studies on the Effect of Sample Dimensions on Comminution Testwork Results.",
co-authered by Derek Barratt, DJB Consultants, Inc.
Presented at Procemin 2009 conference in Santiago, Chile.

"Testwork Programs that Deliver Multiple Data Sets of Comminution Parameters for use in Mine Planning and Project Engineering",
co-authered by Derek Barratt, DJB Consultants, Inc.
Presented at Procemin 2008 conference in Santiago, Chile.

"Solving Mass Balances using Matrix Algebra", Published as part of the AusIMM Mineral Processor's Toolkit.

"Comparison of UCS to Bond Work Indices",
co-authored by Derek Barratt, DJB Consultants Inc, and Ken Wood, Fluor Mining & Minerals.

"Performing Metallurgical Calculations on Computerized Spreadsheets"
Published to Internet, Apr 3, 2000

"Summary of the Australian PAL Nickel Projects"
Presented Nov 1999 to the Vancouver Branch of the CIM.

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

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


Address: First Floor, Penrose 1, Penrose Dock, Cork, T23 KW81, Ireland

Mobile Phone/Signal: +1-778-388-2444, +353 89 982 6571

Email: or