History | Sepor, Inc

Our History

Founded Since 1953 By Geologist Oreste “Ernie Alessio”

Sepor, Inc. began business in 1953 with the introduction of the Sepor “Microsplitter” , a Jones- type Riffle splitter, developed by geologist Oreste “Ernie” Alessio for his own use in the lab. Sepor grew over the next several decades to offer a complete line of mineral analysis tools, as well as pilot plant equipment for scaled operations. Today, Sepor, Inc. is the ‘go to’ manufacturer and supplier of analytical, metallurgical and pilot scale mineral process equipment.

Sepor, Inc. offers a wide range of equipment for a variety of purposes at competitive prices and the highest level of customer service. Our service includes a technical staff, experienced in mineral processing, to assist our clients with appropriate equipment selection for their applications.

Our administrative personnel are skilled in processing orders quickly and accurately, whether domestic or international transactions.

Sepor, Inc. is located in the Port of Los Angeles area. Sepor, Inc. has the ability to consolidate and ship orders for our customers for equipment from various sources in the U.S.A. to include export preparation (ie. boxing, documentation, drayage to port, etc.)

Sepor, Inc. is always pleased to hear from current and prospective clients and welcomes all requests for information or other services which we may provide.


January 2013

Sepor furnished a 50 gallon per minute Merrill-Crowe Plant to a Mexican company to determine the feasibility of using the zinc precipitation method on their silver-gold ore. It was designed to be modular and easy to assemble and operate in the field.

August 2013

Sepor’s cyclone test rig features the highly efficient Krebs GMax cyclones, which have 98% efficiency in classification of gold and copper ores under the conditions tested.  Classification at 15µ, 20µ and 35µ were achieved with less than 2% of the oversize in the fines (D98).

August 2014

Turkish Mining company contracts with Sepor to provide Sepor’s New FC Bond Mill, a Batch Ball Mill as well as Large Roll drives for their Lab.

January 2015

Sepor is proud to announce the signing of representation agreement with Sepro Ghana for West Africa operations.

September 2015

Minera Mexico chooses Sepor to provide full suite of analytical and metallurgical laboratory equipment to their Buena Vista project in Sonora Mexico.

March 2016

Sepor attends both SME Annual Conference in Phoenix and PDAC Annual Convention in Toronto.

September 2016

 Sepor technical service team installs and commissions over 80 pieces of lab equipment for mine in Mexico for US engineering firm.

March 2018

 Sepor lands contract to supply FC Bond MillCrushing and other lab equipment to Agnico Eagle Canada.

Supplies contracts to supply magnetic separation equipment to Toms In Irkutsk Russia.

Sepor supplies pressure filter and lab equipment to Harte Gold labs.

July 2018

Sepor and M3 Engineering and Southern Peru Copper sign agreement to provide lab equipment for SPCC Toquepala expansion. Sepor will also provide field technical assistance for installation and commissioning.

February 2013

Sepor furnished a Vezin Sampler, to give a 5% cut, for a field sampling program at a major gold mine in Nevada. The vezin was mounted on a truck bed, along with other equipment, and used at the site.

December 2013

Sepor contract with independent mineral producer in western USA for engineering & process consultation services.

September 2014

UAE based company acquires Hydro cyclones, Large Pressure filters and Mineral jig for Middle East mining company.

February 2015

Spiral test rig, Ball mills and other equipment sold to Botswana based research Company.

November 2015

May 2016

October 2016

Sepor is proud to announce that its latest products are available for sale, the new 10″ Leach column and its fully machined 16×32 Continuous ball mill. Please visit our website, “New Products” for full details or call us at 800-753-6463

April 2018

Sepor supplies Magnetic separation equipment to Dubai based trading corporation.

Sepor supplies large 8×8 crusher to Kinross Golds’ Tasiast Mine in Mauritania.

Southern Peru Copper extends multiple contracts for supply of laboratory crushingsampling and fire assay equipment to their new mine extension. Contract also includes installation and commissioning of equipment by Sepor field personnel.

August 2018

Sepor wins bid for lab equipment for McEwen’s Mining’s Gold Bar project in Nevada.

April 2013

Sepor Inc, delivers on large scale Wet Fume Scrubber Project to a major Mexican Silver Mine. Scrubber is SS in construction and comes equipped with Quench tower and FRO input of 12,000 CFM. Overall removal efficiency is 85%.

December 2013

Sepor contract with independent mineral producer in western USA for engineering & process consultation services.

October 2014

Sepor wins Contract to provide large quantity of lab equipment to Russian firm including Sepor’s New FC Bond mill and roll drives.

March 2015

Sepor attends PDAC in Toronto, displaying the new FC Bond mill designed and produced in-house.

January 2016

Sepor expands its pilot plant capabilities with the internal design of small (< 250 kg) carbon strip circuits.  Both atmospheric and pressure strip options are within the new circuit options.

June 2016

Sepor’s new 28 container Mixing Wheel is shipped to Namibia. The mixing was designed and built by Sepor.

April 2017

The Colorado School of Mines, Kroll Institute of Extractive Metallurgy conducts Work Index tests of Sepors’ new FC Bond Mill. Tests were conducted over a 6 month period and confirmed Sepors’ Bond mills statistical advantages versus other models.

May 2018

 Sepor enters in supply contract for magnetic separation equipment and 4 stage agitator for Zambia Ministry of Mines.

Sepor supplies pressure filter equipment to Oceana Gold – Haile mine lab in South Carolina.

Prosep services supplies contract for a Sepor FC Bond Mill in Ghana.

Sepor acquires multiple contract for supply of lab equipment for 6 labs in Figi for Lion One Metals.

September 2018

Sepor signs agreement with Lundin Mining to provide lab equipment to the Fruta del Norte project in Ecuador.

July 2013

Sepor Inc signs contract with major Canadian Engineering firm for feasibility work on Iodine project.

March 2014

Sepor signs contract to provide stainless steel pressure filters to mining operation in Mongolia.

December 2014

Mongolian based company contracts with Sepor to build a 65TPH/10GPM  Merrill Crowe plant.

July 2015

Sepor celebrates 60th anniversary!  Sixty years ago, Sepor began by offering its Jones style microsplitter, a product still offered today.

February 2016

The first of the new 15” dual cone blender with twin discharge is shipped to mining operation in Namibia.

August 2016

Sepor is proud to announce its new Pilot Plant design and construction capabilities, recent design layouts have been sent to India and Africa for client review. Please contact us at info@sepor.com or call our toll free number and ask for Tim or Drew for design inquires.

October 2017

Sepor delivers 3′ x 5′ ball mill to Argentinian gold mine for slag mill operations. The ball mill is part of a new product line for Sepor of larger scale mill.

June 2018

Sepor gets contract to supply metallurgical sampling equipment to Nouveau Monde Graphite in Canada.

SQM Chile extends contract to Sepor for the manufacture and assembly of Calciner skid. 

October 2018

Sepor and Nevada Lithium sign agreement to provide large pilot plant equipment to their Lithium project in Nevada

august 2019

Sepor provides laboratory and mineral processing equipment for Fijian Gold Mine