Limestone mining and lime production.  Factors that affect physical and chemical properties of mined limestone and produced lime.

Quality control of talc from mining operations.  Factors that affect the properties of talc for use in industrial processes.

Worked on process chemistry of zinc electrolyte purification in a major north American lead/zinc refinery.

Troubleshooting of Betts Process for electrolytic lead refining in a major north American lead/zinc refinery.