Minerals Research Lab Reports

The Minerals Research Laboratory is a world leader in research, development, and implementation of mineral processing techniques. The MRL is part of the North Carolina State University College of Engineering, under the management of the NC State Industry Expansion Solutions.


This page lists public mineral beneficiation reports prepared by the Minerals Research Laboratory (MRL). These reports and publications are organized chronologically from oldest to youngest. By listing these reports here, it is hoped these will provide a bridge from exploration to bench-scale and pilot plant beneficiation studies to assist the minerals industry. These reports also provide a wealth of information on North Carolina’s mineral resources.

Many of the public reports are available for free download directly from the web site, by clicking on the report title. We are scanning and uploading the reports as time allows, so reports that have not been uploaded yet are available only by request. Use the contact page to request any report not available on-line; they are all free of charge.

The MRL also conducts research and provides services under contractual agreements with industry and private companies. Reports pertaining to these studies are confidential and are not available to the public without written permission of the sponsor.

Keyword List

The following keywords occur in various MRL report titles; the keyword list is not exhaustive, and is provided only as a set of search suggestions. Using your browser, you can “search” or “find” reports with specific keywords in the title; for example, you can search for “mineral” or “beneficiation” or some other item. The keywords do not have hyperlinks.


  • Adsorption
  • Aggregate
  • Amine
  • Anionic
  • Anthophyllite
  • Asbestos
  • Ball milling
  • Barite
  • Bench
  • Beneficiation
  • Bulk Density
  • Calcining
  • Carbon
  • Cation exchange
  • Chemical composition
  • Chromite
  • Circuit
  • Clay
  • Coal
  • Coating
  • Concentrate
  • Core
  • Desliming
  • Detergent-type
  • Dielectric
  • Drying
  • Dust
  • Elutriation
  • Feldspar
  • Fillers
  • Fine grinding
  • Flake
  • Floatation
  • Flotation cell
  • Fluoride
  • Foundry sand
  • Garnet
  • Gibbsite
  • Glass sand
  • Gold
  • Gold-thiourea
  • Grinder
  • Grinding
  • Heavy minerals
  • High intensity
  • High purity quartz
  • Hydraulic sizer
  • Hydrosizing
  • Industrial mineral
  • Kaolin
  • Kings Mountain
  • Lease
  • Loss on ignition
  • Magnetic
  • Mica
  • Non-hydrofluoric acid
  • Nonmetallic
  • Nonpolar oil
  • Ore
  • Paint
  • Particle size
  • Phosphate
  • Pilot plant
  • Potash
  • Process development
  • Process
  • Processing
  • Pycnometer
  • Pyrophyllite
  • Quartz
  • Reagent
  • Reclaimed
  • Resources
  • River sand
  • Sand
  • Scheelite
  • Schist
  • Silicate
  • Sillimanite
  • Soapstone
  • Spodumene
  • Strip mine
  • Sulfide
  • Tailings
  • Texas Gulf Sulphur
  • Titanium
  • TVA
  • Ultrasonic conditioning
  • Ultrasonic
  • Wet magnetic
  • Zircon

Research Reports

Note that the reports were scanned in from the best available copies, but some older reports may be difficult to read. Contact us for more information or to order a report not yet available online.

General and Miscellaneous Publications

Because some of these reports refer to collections of documents, many will not be made available on-line. To order a publication, use the form on the contact page.

  • 12. Oral History of North Carolina Mining, in review.
  • 11. “High-Silica Resource Potential of the Upper Chilhowee Quartzite, McDowell County, North Carolina” by Leonard S. Wiener, Carl E. Merchat, and James T. Tanner, Jr., Information Circular No. 26, North Carolina Geological Survey, 1990. 22 pages. Available from the North Carolina Geological Survey.
  • 10. “The North Carolina State Minerals Research Laboratory and Minerals Wastes in North Carolina,” by Laboratory Staff, May 1968. 10 pages.
  • 9. “Some Improvements in Techniques, Light Reflectance Evaluation of Coarse Flotation Mica,” J. Philip Neal, January 1966. 6 pages.
  • 8. “Heavy Liquid Separation Procedure,” P. N. Sales. Included in Minerals Research Laboratory Bulletin, Vol. 1, No. 3, November 1959. 3 pages.
  • 7. Minerals Research Laboratory – A Brief History. Compiled by subcommittee of Laboratory Advisory Committee, January 1970. 8 pages.
  • 6. “Minerals Research Lab Aids State Industry.” Article in Engineering Research News, Winter 1970. 1 page.
  • 5. “University’s Minerals Lab in Asheville Plays Key Role in Aiding State’s Mineral Industries,” Mary N. Yionoulis. Article in The Journal of North Carolina State University, January 1970. 1 page.
  • 4. “Minerals Research Laboratory Aids Phosphate Industry.” Article inEngineering Research News, July 1964. 1 page.
  • 3. Progress Reports. Reports on non-confidential projects as listed in Newsletterand are available on request.
  • 2. Minerals Research Laboratory Newsletter. Published quarterly since 1971. Lists available publications, current projects, and selected news briefs. 2 or 3 pages. Free.
  • 1. Minerals Research Laboratory Bulletins. Published three or four times a year from 1959 to 1971. Reviews of Laboratory activities and news items. Replaced by Newsletter in 1971.