Member Section of The Society for Mining, Metallurgy and Exploration, Inc. (SME)
SME is the technological organization for professionals in the minerals industries, and is comprised of a diverse group of mining professionals. This group includes engineers, geologists, scientists, regulators, educators, technicians, various support professionals such as sales personnel, and managers. One of the major goals of the SME is to advance professional development of it's members. To this end, our local section attempts to achieve this by presenting topical presentations at our monthly meetings, our seminars and field trips.

image Due to the effects of the Covid-19 virus on the mining industry and the world, our meetings currently, are all virtual, Google Meet or Zoom Meetings. Below is a list of past Virtual Meetings and a brief description. preceeded by some planned future meetings, and a brief description. If you would like to give a presentation in one of upcoming future Virtual Meetings, please contact us with a brief description of the subject matter, and the presenter. Send email inquiries about a proposed Zoom Presentation to the SoCal Mining members to Allan Levy (Program Chairman)and/or Dan Palo and you will be contacted regarding the proposal.

Notice: Our Upcoming Virtual Meetings:

March, 11,2021 Meeting: "Selective Heat Treatment of Ores: Shaking up Economics of Mineral Recovery"

PRESENTED BY: Tracy M. Holmes, P.Eng, President of Jenike & Johanson Ltd

TIME: 5:45 - 7:00 pm Pacific Time

RSVP: By accepting invite to the meeting and placing on your calendar

Download the PDF program below, with link and instructions to Join Meeting with Google Meet

Or Join by phone (US) +1 443-606-2467 (PIN: 291047255)

COST: No Charge

ABSTRACT Crushing and grinding rocks uses significant energy. Up to 50% of the total energy used in mineral processing can be just for particle size reduction. As ore bodies age and grades decline, increasingly higher energy input is required for comminution, which increases costs and the carbon footprint of these operations. A step change in energy reduction is required to meet the future demand of these processes. A promising technology, selective heat ore treatment, utilizes microwave energy to create microcracks, to significantly improve the comminution efficiency. In addition, microcracks result in fracture along the boundaries between the valuable mineral and host rock, allowing mineral recovery at a larger particle size, thereby reducing the energy input further and decreasing challenges around tailings management. A significant reduction in energy consumption and often an associated increase in throughput for existing equipment can extend the lives of mines with degrading ore grades. This technology not only will improve margins in operating plants, but also extend return on invested capital in plants that would otherwise be uneconomical to operate. The current state of the technology as it is applied to Canadian ores, specific ore characteristics found through testing to be candidates for this technology, and the anticipated benefit over existing processes will be presented.

Tracy M. Holmes, P.Eng. is President of Jenike & Johanson Ltd. She received her BASc. in Civil Engineering from the University of Waterloo in Ontario. She specializes in designing and evaluating bulk solids handling systems. Over her 25+ years with J&J, she has provided consulting services to a broad spectrum of national and international clients.She has authored and presented technical papers on subjects including reliable bulk solids handling, effective bin and feeder design, shipping of fine moist cargoes, silo structural failures and maintenance and innovation. In addition to being included in conference proceedings, her papers have been published in periodicals including CIM Journal, Powder & Bulk Engineering, and World Coal.

Download PDF file with Log In Info: 2021 March 11 Meeting, PDF File  

Notice: Below is a listing of some of our Previous Virtual Meetings, Hosted by Southern California Mining Section, for your informtion:

January, 14,2021 Meeting: "Structural Controls and Timing of Gold Mineralization in SE CA: Identifying Exploration Criteria"

PRESENTED BY:Tarryn Cawood, PhD candidate, University of Southern California

COST: No Charge

ABSTRACT Gold mineralization in SE California is hosted by a variety of geological structures, from steep brittle faults related to the young San Andreas system, to low-angle ductile shear zones adjacent to ~170 Ma granitic plutons. As a result, a wide range of ore deposit models have been proposed, each of which calls for a different exploration strategy.

Tarryn Cawood is geologist specializing in hydrothermal ore deposits and structural deformation. She is currently a Ph.D. candidate at the University of Southern California.

November 2020 Meeting: "Mining, Climate Change, and Conflict: Lessons from Nigeria and Kyrgyzstan"

PRESENTED BY: Casey Bartrem, PhD, Executive Director, TerraGraphics International Foundation, Moscow, Idaho

October 2020 Meeting: "Development Plan for the Imperial Gold Project, Imperial County, CA"

PRESENTED BY: Marc Leduc: Chief Operating Officer, Kore Mining Ltd., Denver, CO.

September 2020 Meeting: "Rise to the Occasion - Lessons from the Bingham Canyon Manefay Slide"

PRESENTED BY: Brad Ross, PhD, PE, Professor of Practice Director, Geotechnical Center of Excellence, Lowell Institute for Mineral Resources, University of Arizona

May, 2020 Meeting: "Lithium: Resources, Recovery, and Recycling"

PRESENTED BY: York Smith, Assistant Professor in the Materials Science and Engineering Department at the University of Utah

February 2020 Meeting: "Exploration Techniques in Scandinavia"

PRESENTED BY: Anders Hogrelius, M.S, PG, RPGeo; Earth Consultants International, Inc.





CHAIRMAN  Todd Ririe
TREASURER  Nicolette Grill

March 1, 2021