Panelist, Panel Discussion on “Water Related Issues Concerning India,” at the 3rd International Perspective on Current & Future State of Water Resources & the Environment, Chennai, India, January 7, 2010.

Participant, Sub-Sea and Sub-Surface Oil and Dispersant Detection Sampling and Monitoring Strategy – Unified Command, Federal Agencies and Academic Partners Meeting, Tulane University, New Orleans LA, September 1, 2010.

Participant, NCEAS Gulf Oil Spill Ecotoxicology Working Group’s first meeting at Dauphin Island Sea Lab, Mobile AL, September 14-17, 2010.

Technical Advisor, Mineral and Metallurgical Processing Division Executive Committee, 2010 Mid-Year Meeting, Philadelphia PA, September 18, 2010.

Participant, Workshop on “Science and Technology of Dispersants Relevant to Deep Sea Floor Oil Releases,” Arlington, VA, September 22, 2010.

Honorary professor, atWuhan Institute of Chemical Technology, China
Panelist, “Material Characterization & Preparation” protocol panel discussion, at the Center for the Environmental Implications of NanoTechnology (CEINT) Meeting, Washington, DC, September 10, 2009.

Defense Examiner at Lulea University of Technology, Sweden, November 23-28, 2009.

Dissertation Sponsor for students in the PhD program in Chemical Engineering, Columbia University
Judge: A.I. Levorsen Memorial Award, at the AAPG Rocky Mountain Section Annual Meeting, Billings, Montana; June 11-13, 2006.

Panelist, National Science Foundation Review Panel for Fiscal Year 2006 Unsolicited Proposals in the NSF Particulate & Multiphase Process Program, Arlington, VA, January 10 – 11, 2006.

Technical Content Adviser, MPD Executive Committee, SME
Evaluator of proposals submitted to the Swedish Foundation for Strategic Research
Panelist, National Science Foundation Small Business Innovative Research/Small Business Technology Transfer (SBIR/STTR) Panel Meeting, Arlington, VA, September 1, 2005.

Panelist, “Superfund Basic Research and Training Program (SBRP),” National Institute of Environmental Health Sciences, Research Triangle Park, NC, October 18-21, 2004.

Organizing Committee, Engineering Conferences International, Conference in Egypt.
NSF SBIR Panel – Part II Meeting, Arlington, VA, August 7, 2003.

Panelist, National Science Foundation, SBIR/STTR Phase I, Arlington, VA, September 20, 2002
Program Committee, American Chemical Society Colloid Division.

Executive Committee, American Chemical Society Colloid Division.

Panelist, National Science Foundation, Nanoscale Interdisciplinary Research Team, Arlington, VA, January 23, 2001.

Panelist, American Ceramic Society, “Industry-University-Government Joint Research for Future Global Industrial Growth”, Frontiers of Materials Research and Product Innovation, Indianapolis, Indiana, April 23, 2001.

Engineering Foundation Liaison, Froth Flotation Conference on Froth Flotation, May 2001.

Planning Committee, NationalAcademy of Engineering Regional Meeting, on Engineering for Humanity and the Environment, New York, New York, May 31, 2001.

Honored Guest, Welcoming reception and opening ceremony, 2001 International Symposium on Nanomaterials and Technology. Beijing, July 2, 2001.

Board Member, National Science Foundation, Gainesville, Florida, September 4-6, 2001.

Doctorate Adjudication Committee, Norwegian University of Science and Technology, September 21, 2001
United Engineering Foundation Council.

United Engineering Foundation Project Committee, 2001.

University of Florida panel on Cross-disciplinary Particle Science & Technology, Gainesville, Fl, February 12, 2000.

Director, National Science Foundation I/UCRC for Advanced Studies in Novel Surfactants, 1997-Present
Hosted International Fine Particle Research Institute’s 10th Annual Meeting, Teaneck, New Jersey, 1989.

Material Science Expert, National Science Foundation Workshop, “Strong Sub-fields of Indian Doctoral Committee, Department of Chemistry, CUNY Brooklyn, 1986-1989.

Science and Technology: Advantageous Areas for U.S. collaboration, Arlington, Virginia, 1987.
Honorable Consultant, Division of Finer Particle Technology of Chinese Technical Information, People’s Republic of China, 1986.

1998 – Present:
Director, National Science Foundation: Industry/University Cooperative Research Center for Advanced Studies in Novel Surfactants and (since 2008) Center for Particulate and Surfactant Systems

1988 – 1997:
ChairmanHenryKrumbSchool of Mines, Dept. of Min., Met., & Mnrl. Engg., Columbia University

1987 – Present:
DirectorLangmuirCenter for Colloids & Interfaces, Columbia University

1983 – Present:
La von Duddleson Krumb Professor of Mineral Engineering, Columbia University

1978 – 1983:
Professor of Mineral Engineering, Columbia University

May – July 1977:
Visiting Scientist, University of Melbourne

January – April 1977:
Visiting Professor/Scientist, Indian Institute of Science, Bangalore

1970 – 1978:
Associate Professor of Mineral Engineering, Columbia University

May – July 1976:
Acting Chairman, School of Mines, Columbia University

1967 – 1970:
Research Chemist, R.J. Reynolds Industries, Inc., Winston-Salem

1965 – 1967:
Senior Research Engineer, Intern. Minerals & Chemical Corp., Libertyville, IL

1961 – 1964:
Teaching and Research Assistant at the University of California, Berkeley

1958 – 1959:
Senior Laboratory Assistant at the National Chemical Laboratory, Poona, India