David C. Shelton IUGFS (1966)
Home: Golden CO
Career: Retired from Shelton Environmental LLC
Comments: “Amazing that you found me after all these
years. My last Clay in Calico coffee mug is now broken.“
Ching Tu G429/429e (2005)
Home: Houston TX
Career: Schlumberger-WesternGeco (Retired)
Mark Stacy IUGFS (1991)
Home: Fort Collins CO
Career: Wenck Associates, Inc.

Comments: “Great to hear that fieldcamp is still going
strong! Need more well trained geologists. Are you offer-
ing a hydrogeologist’s class? “
R. Greg Vaughan G429 (1991)
Home: Flagstaff AZ
Career: US Geological Survey
Frederick (Fred) Stanin G429 (1978)
Home: Lafayette CA
Career: Arcadis Design and Consulting
Edward M. Stolper G429 (1972)
Home: Pasadena CA
Career: Provost; William E. Leonhard Professor of Geol-
ogy; Carl and Shirley Larson Provostial Chair, Division of
Geological and Planetary Sciences, California Institute of
Technology Robert Swartz G429 (1993)
Home: Folsom CA
Career: Regional Water Authority
Jennifer N. Swift G429 (1984)
Home: Los Angeles CA
Career: Spatial Sciences Institute, USC
Comments: “Dear James, What a wonderful letter! I will
surely try to connect at a conference in the future. FYI, Don
Hattin was my “Uncle Don”, and very influential through-
out my life. He and Aunt Margie grew up with my parents
on the east coast. We will all miss him very much. He is the
one who encouraged me to attend camp w/IU rather than
the school I was attending. I could scan my photos from
1984 field camp if you’d like them for the website? I still
have them in an album :) I look forward to hearing from
you. Happy Holidays! All the best, Jen spatial.usc.edu “
David Tett G429 (1990)
Home: Cypress TX
Career: Development Geophysicist https://www.linkedin.

com/in/dltett Dan Thompson G429 (2001)
Home: Andover MN
Career: Dakota Technologies
Dennis Tryon IUGFS (1962)
Home: Tucson AZ
Andrew Van Benschoten IUGFS (1965)
Home: New Kingston NY
Marwan A. Wartes G429 (1996)
Home: Fairbanks AK
Career: Alaska Division of Geological and Geophysical
Surveys Christine Weaver (Gordon) G429 (1994)
Home: Sterling Forest NY
Career: HDR Engineering, Mahwah, NJ
Ronald Wilkins G429 (1986)
Home: Carrollton TX
Ben Witherell G429 (1987)
Home: Flemington NJ
Career: New Jersey Department of Environmental Pro-
tection Donald Wittemore G429 (1967)
Home: Lawrence KS
Career: Kansas Geological Survey
Comments: “As an undergraduate chemistry major
with several geology courses at the University of New
Hampshire, and as a first-year graduate student in
geochemistry at MIT, I did not have as much geologic
field experience as most geology majors. MIT sent their
students without a field course to the IU field program,
which was very valuable training in the development of
my geologic background. After the IU field program, I
transferred to Penn State University because I wished
to obtain a geosciences degree with more practical
application to the environment. During the summer of
1968, I spent a summer of geologic mapping and pros-
pecting for a mining services company in the Canadi-
an arctic, for which the IU field training was especially
valuable. I obtained a Ph.D. in geochemistry and min-
eralogy at Penn State and then started my career as
an Assistant Professor in Geology at Kansas State Uni-
versity. At KSU I worked on groundwater and environ-
mental geochemistry, earning tenure, before I decided
to join the Kansas Geologic Survey at the University
of Kansas in 1978, where I have conducted research in
hydrogeochemisty. I am now in my last year of phased
retirement as a Senior Scientific Fellow. “
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