Hooke College

As we strive to provide engaging learning experiences for all students, our teaching staff is made up of subject matter experts who remain active in their fields as senior scientists and microscopists from McCrone Associates, and adjunct faculty who are at the top of their field. Choosing instructors that continually gain relevant experience to bring to the classroom enhances the student learning. That is why it is true when we say, "Learn from Experience... Learn from the Experts."


Joseph G.Barabe

Adjunct Instructor

24+ Years Experience

Joe served McCrone Associates for 24 years as a Senior Research Microscopist and Director of Scientific Imaging. He mentored under the tutelage of Dr. Walter C. McCrone where he learned the special skills necessary to examine and analyze the materials constituting works of art, historical objects, and documents, both historical and contemporary. His analytical duties included the analysis of art objects such as paintings and prints, ancient documents and historical and archeological artifacts using a variety of analytical tools including polarized light microscopy, SEM with x-ray spectrometry, infrared and Raman spectroscopy and other analytical methods as appropriate. He has performed forensic document examinations including forged and altered documents; paper, ink and toner comparisons; writing sequence determinations and printing process identification. His scientific imaging specialties include photomacro- and –micrography and invisible radiation photography. Famous projects: analysis of the ink on the Gospel of Judas, the Archaic Mark Forgery, the Voynich Manuscript analysis and the Zapruder Film imaging project. Prior to joining McCrone, Joe was Senior Scientific Photographer at the University of Chicago.

B.A., Michigan State University, East Lansing, Michigan, 1967.

David J.Brundage

Adjunct Instructor

38+ years of Experience

Dave is a forensic scientist specializing in the areas of Firearms and Toolmark Identification, including the function, malfunction and operation of firearms, bullet and cartridge case comparison, trajectory analysis, crime scene reconstruction and muzzle to garment distance/range determination. He was a training coordinator for twelve of his twenty-four years with the Illinois State Police forensic laboratory system and worked another eleven as Criminalistics Unit Supervisor for the Indianapolis-Marion County crime lab. He has taught a number of examiners in these areas of expertise, as well as in Footwear, Tire Track, an d Fabric Impression Identification, and Physical Matching.

Dave is currently a contract trainer for the National Forensic Science Technology Center training new examiners for the Michigan State Police and the Department of Defense. He has also taught courses for the International Forensic Science Training Centre in Indianapolis, IN, and the International Forensic Science Academy in Hattisburg, MS. He works as a private consultant in routine firearm cases and special litigations in and around the mid-west. Dave also works as a Product Safety Advisor for the National Shooting Sports Foundation, and has served as a project manager for Ron Smith & Associates. He is a Distinguished & Life Member of the Association of Firearm and Tool Mark Examiners, written a number of research papers, and served that organization as both President and Treasurer.

MS, Organization/Admin of Higher Ed., Southern Illinois Univ., Carbondale, 1994. BS, Biology, Central Michigan Univ., Mt. Pleasant, 1970.

William L.Chapin


30+ Years Experience

Following a 20-year career with the Johnson County Criminalistics Laboratory, Bill joined McCrone in 1998 as a Senior Research Microscopist. He currently is a consultant in ultramicroanalysis and microscopy applied to manufacturing problems, contamination control, pollution, industrial hygiene, indoor air quality, art, archaeology, and forensic science, which includes consumer safety, medical malpractice, patent infringement, industrial security, fraud, environmental law, and criminal investigations. His clients are from manufacturers of vehicles (automobiles, trucks, boats, motorcycles, bicycles, trains, etc.), chemicals, computers, cosmetics, foods, glasses, paints, pharmaceuticals, fibers, papers, plastics, steels, and tires. Legal clients include law enforcement agencies, prosecution and defense criminal attorneys, plaintiff and defense civil attorneys, and judges (“friend of the court” appointments).

As a Forensic Chemist (Trace Evidence) with the Johnson County Criminalistics Laboratory, Mission, Kansas, 1978-1998, he was responsible for crime scene analysis including blood spatter interpretation; fire scene debris analysis; trace evidence analysis including paint, glass, fibers, explosive residue, and miscellaneous particle identification; courtroom testimony.

B.A. Biology, Sterling College, Sterling, Kansas, 1973.

Peter M.Cooke

Adjunct Instructor

28+ Years Experience

Peter has more than 27 years experience teaching microscopy to over 7,000 students worldwide. Peter is an advisor to and instructor for the Hooke College of Applied Sciences, he is also the principal of and instructor for Microscopy Instruction, Consultation & Analysis (MICA), specializing in asbestos identification instruction and consultation. Peter has an engaging teaching style and a keen ability to explain complex ideas at introductory through advanced levels. Before founding MICA in 1999, Peter was an instructor and research microscopist at McCrone Research Institute for 14 years. He has consistently been recognized by students, laboratory directors, and industry experts for his pedagogical and technical expertise.

John GustavDelly

Scientific Advisor

40+ Years Experience

John originally joined McCrone Associates in 1965. John is currently Scientific Advisor to The McCrone Group, including the online Atlas of Microscopic Particles, “At the Eyepoint” a bi-monthly article series on a variety of microscopy topics that can be read at ModernMicroscopy.com, and a consultant to the staff of McCrone Associates and McCrone Microscopes & Accessories on matters having to do with applied polarized-light microscopy.

Prior, he was responsible for microscopical research and teaching of McCrone Research Institute courses in Applied Polarized Light; Photomicrography; Advanced Microscopy; Microscopical Mineral Identification; Forensic Microscopy; Biological Microscopy; Fluorescence Microscopy; Asbestos Identification; Pharmaceutical Microscopy; Soil Identification; and custom-designed courses for specific industries, on-site.

He was also Head of McCrone Associates’ laboratory for contamination identification. Supervised research concerned with troubleshooting microscopic particle problems for government and industry, particularly the handling and identification of small particles that contaminate the atmosphere, water sources, industrial processing areas, and cleanrooms. John was also responsible for studies pertaining to industrial quality control, and the causes of failures and defects in industrial products, and a consultant to the medico-legal professions on matters both civil and criminal that involve the evaluation of physical evidence. John also consults on matters of national security, counterfeiting, and classified projects. He is the author of more than 500 books, chapters and articles.

M.B.A. International Business, Roosevelt University, Chicago, Illinois, 1980
M.A. English Literature/Linguistics, Roosevelt University, Chicago, Illinois, 1961
B.S. Zoology (minor: Chemistry/Physics), University of Illinois, Champaign-Urbana, Illinois, 1956

Kristie J.Diebold


15+ Years Experience

Kristie has been a Research Microscopist with McCrone Associates since 1998. Kristie came to McCrone Associates from Rush University Medical Center in Chicago. There she gained experience in microscopy in a cancer research laboratory and was certified as a Medical Technologist in Immunology. She is manager of the clean room on the McCrone Associates side where the work involves microscopical analysis of particles in micrometer and sub-micrometer size ranges including: manipulation, characterization and preparation for instrumental ultra microanalysis. Her research interests have focused on glass delamination in pharmaceutical products (several articles have been published; see a current article at www.pmpnews.com).

B.A. Biology, Aurora University, Aurora, Illinois 1996
Certified Immunologist, Rush University, Chicago, Illinois 1997

JeffreyJankowski, Ph.D.

Adjunct Instructor

20+ Years

Jeff Jankowski is an Associate Professor of Chemistry at North Central College where he has been for the last ten years. Jeff teaches courses in Chemical Analysis, Instrumental Analysis, General Chemistry for majors and non-majors, as well as a general education class Landmark Discoveries in Science. He received his Bachelor of Science degree in Biochemistry from Benedictine University in 1988. He earned his PhD in Analytical Chemistry from the University of North Carolina at Chapel Hill in 1993, under the direction of Dr. Mark Wightman, studying the release of adrenaline from single cells using carbon-fiber microelectrodes. He was an NSF Postdoctoral Fellow at the University of Illinois until 1995 when he accepted an industrial position at Nalco Chemical Company. There he worked in the Mining and Mineral Processing Division developing products for waste-water treatment for which he was awarded Researcher of the Year for 1995 and a US patent (US6042732) in 2000. In 2001, he left industry for academia, teaching for two years at his alma mater, Benedictine University, prior to arriving at North Central College in 2003.

Ph.D. Analytical Chemistry, University of North Carolina-Chapel Hill, 1993
B.S. Biochemistry (cum laude), Benedictine University, Lisle, IL 1988

DebraJoslin, Ph.D.


15 Years Experience

Debra joined McCrone Associates in the fall of 2010. She has expertise in applied materials science and materials analysis. Before joining McCrone, as a member of the small team assigned to revamp the software and hardware for Oxford’s Microspec Wavelength Dispersive X-ray Microanalysis (WDX) equipment, she acted as product manager, determining customer performance and usability requirements; employed materials analysis expertise to ensure the new product exceeded all requirements; and applied expertise in the WDX technique to develop a training course for the WDX equipment. Debra served as ‘WDX guru’ for the company, supporting the world-wide applications team by providing training on the technique and troubleshooting complex problems. She also provided solutions to specific customer issues regarding their particular applications of the EBSD technique including the use of the data acquisition software and interpretation of results. Debra has published more than twenty articles in journals and conference proceedings.

Ph.D. Metallurgical Engineering, University of Tennessee 1993
M. S. Metallurgical Engineering, University of Tennessee 1989
B. S. Metallurgical Engineering, University of Tennessee 1985

Daniel E.Kile

Adjunct Instructor

35+ Years Experience

Dan has been teaching optical mineralogy at the U.S. Geological Survey since 1995. Students included private consultants, and museum and government employees working in the fields of geology, paleontology, palynology, and archeology, as well as graduate students at the Colorado School of Mines. He was a faculty adjunct at the Colorado School of Mines in 2004, teaching a full-semester class in optical mineralogy to students enrolled in the geology program. He has given numerous lectures on the subjects of mineralogy and optical mineralogy over the past 20+ years to local earth sciences groups, colleges, and at the U.S. Geological Survey.

He has an extensive publication record in the fields of mineralogy, geology, and environmental chemistry since 1984, with nearly 100 journal articles and abstracts published in peer-reviewed journals, including the American Mineralogist, Canadian Mineralogist, Geochimica et Cosmochimica Acta, and Mineralogical Record. He wrote an extensive monograph on the evolution of the petrographic microscope, which was published by the Mineralogical Record in 2003. Dan is the editor (since 2002) of the Journal of the Microscope Historical Society, an international publication on historical and applied aspects of light microscopy.

B.A., Microbiology, Magna cum Laude, University of Minnesota, 1969
B.S., Chemistry, With Distinction, University of Minnesota, 1969


Adjunct Instructor

16 years+

Sandra has worked in the field of forensic trace evidence analysis for over 16 years. She worked for the FBI Laboratory Trace Evidence Unit from 1997 to 2013 and was a member of the Indian Country Evidence Task Force. She analyzed hairs, fibers, fabric damage and feathers using a range of instrumentation including light microscopy, polarized light microscopy, fluorescence microscopy, microspectrophotometry and infrared spectroscopy. She has taught numerous workshops and short courses on crime scene evidence collection schools and trace evidence analysis. She is a Fellow of the American Academy of Forensic Sciences, a founding member of the American Society of Trace Evidence Examiners and a Fellow of the American Board of Criminalistics (Hairs and Fibers). Sandra has been a member of the Scientific Working Group for Materials Analysis (SWGMAT) since 1999, served as the chair of the fiber subgroup of from 2009 to 2013 and is currently a member of the hair group. She has published in the areas of forensic analysis of hairs, fibers, fabric damage and feather identification.

B.A. Anthropology and Political Science, University of Michigan, Ann Arbor, 1993
MFS Forensic Science, George Washington University, Washington, DC, 1996
MS Forensic Anthropology, Boston University School of Medicine, Boston, 2012
PhD Candidate in Biological Anthropology, the Pennsylvania State University (present)

Kathleen A.Martin, Ph.D.


22+ Years Experience

Kate has been with McCrone Associates since 2004, where she employs infrared and Raman spectroscopy, gas and liquid chromatography, light microscopy and wet chemical methods in the course of analytical problem-solving for a wide variety of clients.

Prior to joining McCrone Associates, Kate worked at Unilever / Helene Curtis, Inc. for 15 years where she used spectroscopic techniques to support product claims, conduct ex-vivo and in-vivo performance testing, address consumer complaints and assist manufacturing facilities in the development and production aspects of a variety of personal care products.

Kate’s current interests include the application of Raman spectroscopy to minerals and carbon materials, including carbon nano-tubes.

Ph.D. Physical Chemistry, Loyola University of Chicago, 1985
B.S. Chemistry, Northeastern Illinois University, 1979

BrianMatsumoto, Ph.D.

Adjunct Instructor

40+ Years Experience

Brian is a retired adjunct associate professor from the University of California where he directed the Microscopy Facility for the Molecular Cellular Developmental Biology Department and the Neuroscience Research Institute from 1992-2009.

During this period he consulted for Optronics, MediaCybernetics, and Yokogawa Electronics. He edited the book Cell Biological Applications of Confocal Microscopy and worked extensively with a variety of light microscopes and digital cameras. His published work from this period includes dark field imaging of single microtubules, the study of protein transport in photoreceptors, and the role of the cytoskeleton in membrane formation of the rod photoreceptor. For biological studies of the photoreceptor, he used DIC, phase contrast, fluorescent, transmission electron, and scanning electron microscopes.

Since leaving the University, he has authored Practical Digital Photomicrography: Photography through the Microscope for the Life Sciences, continued to consult, served as a judge for 2014 Olympus Bioscapes contest, and written books on mirrorless interchangeable lens cameras.
Brian is now working on recording movies with the light microscope using HD and 4K video cameras.

University of California, Los Angeles, 1981, Ph.D. in Anatomy
University of California, Los Angeles, 1971, B.A. in Zoology

Ruben J.Nieblas


12+ Years Experience

Ruben Nieblas is currently Technical Sales Representative for McCrone Microscopes & Accessories. For the past 10 years, he has traveled extensively throughout the country installing microscope systems and training customers in microscopy, digital imaging, and use of Linkam equipment. Ruben is one of the few people in the U.S. to be trained at Linkam’s headquarters in the U.K. Ruben’s many years of real-world experience has helped him develop the Hooke College of Applied Sciences Pax-it Imaging course. He is also the co-instructor of the Freeze Dry Microscopy course.

B.S. Health Science, Benedictine University, Lisle, IL 1998

Wayne D.Niemeyer


37+ Years Experience

Wayne has been with McCrone Associates since 1992. As a senior research scientist in the electron optics group, Wayne performs SEM, EDS and WDS analysis for a wide range of industries. His specialties include: electrochemistry (corrosion), optical microscopy, scanning electron microscopy, electron microprobe analysis, infrared spectroscopy, lubrication and wear, waste water treatment, secondary ion mass spectrometry, x-ray photoelectron spectroscopy, conversion coatings on aluminum and steel surfaces, paint adhesion failure analysis, metallography, gunshot residue (GSR) analysis and other forensic applications of the SEM. Wayne is a member of the Scientific Working Group for Gunshot Residue (SWGGSR). His current responsibilities include identification of inorganic and organic particles and thin films; consultant in ultramicroanalysis and microscopy for clients in the pharmaceutical, electronics, paint, automotive, packaging, and metals industries; expert witness testimony in civil and criminal cases; and provides gunshot residue (GSR) analysis using the SEM/EDS method. He came to McCrone after twenty-three years of experience with National Can Corporation Research and Development Laboratory (combined with American Can Company in 1987 to form American National Can Company) , where he was responsible for process development of metalworking lubricants and metal cleaning/surface preparation of aluminum and steel beverage/food containers. He provided technical assistance to production facilities by troubleshooting process related issues and for customer complaints. To support the development/troubleshooting work he conducted or supervised activities for surface analysis of aluminum, steel, glass, and plastic packaging materials utilizing scanning electron microscopy, secondary ion mass spectrometry, energy and wavelength dispersive x-ray spectrometry, infrared spectroscopy, and optical microscopy (polarized light). Wayne has been developing and co-instructing the SEM course for over 15 years.

B.A. Chemistry (cum laude), Illinois Institute of Technology, 1977
B.S. Mathematics, DePaul University, 1969



30+ Years

Dr. Graham Rankin holds doctorates in Chemical Oceanography and Analytical Chemistry. He taught chemistry at Marshall University beginning in 1993 where he was on the faculty advisory board for the Forensic Science Program from its inception (1994) and lectured part-time beginning with the first entering class of graduate students. Beginning Fall 2000, he transferred full time into the Forensic Science Program at Marshall until his retirement in the Summer of 2013. He developed the Forensic Chemistry emphasis for students interested in drug, toxicology, arson, explosives or trace evidence analysis. His research areas included the individualization of smokeless powders and ignitable liquids found in post-blast and fire debris, and development of analytical methods for controlled substance analogs (designer drugs). He currently is in private practice as expert forensic consultant and trainer. He is a Fellow of American Academy of Forensic Sciences (AAFS), (Criminalistics Section), Diplomate of American Board of Criminalists (ABC) with specialties in fire debris analysis and seized drug analysis, a member of American Chemical Society, Mid-Atlantic Association of Forensic Scientists (MAAFS, Chair of the Criminalistics Section for 2012-2013), and Technical Working Group of Fire and Explosives (TWGFEX, co-chair of the Explosives Lab Analysis Education committee).

B.S. Biology, Southern Methodist University, May 1968
Ph.D. Oceanography, Texas A & M University, August 1974
Ph.D. Chemistry, University of Houston, August 1993

Joseph M.Rebstock


36+ Years Experience

Joe has been with McCrone Associates since 1986. As a senior research scientist in the electron optics group, Joe specializes in particle analysis, polymer imaging, electronics, artist pigments, medical devices, and general industrial problem solving, using SEM, EDS and WDS analysis. He is responsible for identification of inorganic and organic particles and thin films and a consultant in ultramicroanalysis and microscopy for clients from government and from the pharmaceutical, electronics, paint, automotive, packaging, and metals industries. Previously, he supervised McCrone’s Norcross, Georgia, facility and performed independent analytical testing for a broad range of industries and materials to resolve technical problems. He is skilled in optical microscopy, scanning electron microscopy employing energy dispersive x-ray analyses, and electron microprobe analyses employing full quantitative wavelength dispersive x-ray spectroscopy. Joe has been developing and teaching the SEM course for over 15 years.

Studied chemical engineering at University of Maryland, College Park, Maryland

Kent L.Rhodes, Ph.D.


20 Years Experience

Kent has been with McCrone Associates since 1990. As Senior Vice President and Technical Director, his responsibilities include sample analysis, along with quality control and advanced data analysis. Areas of interest are WDS and surface analysis. Kent specializes in surface analytical techniques using x-ray photoelectron spectroscopy, Auger spectroscopy, secondary ion mass spectrometry, and electron microprobe analysis.

Kent has been developing and teaching the SEM course for over 15 years.

Ph.D. Inorganic Chemistry, Northwestern University, 1990
M.S. Inorganic Chemistry, Northwestern University, 1986
B.S.S. Chemistry and Mathematics, Cornell College, 1985


Adjunct Instructor

32+ Years Experience

Scott has worked in the area of trace evidence analysis for the past 35 years, concentrating his efforts in the areas of paint, glass, and polymer analyses. He has spent the last 32 years as a trace evidence examiner with the Florida Department of Law Enforcement and continues to perform casework analyses in these areas. He was awarded the Florida Department of Law Enforcement’s Advanced Technology Award in 1985 and presented the Florida Department of Law Enforcement’s Forensic Scientist of the Year Award in 1998 by the governor and his cabinet. Scott has presented over twenty technical papers dealing with trace evidence analysis to the Southern Association of Forensic Scientists over the years and has taught over thirty courses dealing with forensic paint analyses to agencies and professional organizations throughout the United States. He has published the results four studies dealing with paint and glass trace evidence analyses in the Journal of Forensic Sciences, has authored a review paper on current trends in forensic paint examinations in Forensic Science Review, and has authored a chapter on forensic paint analysis in Howard Humecki’s Practical Guide to Infrared Microspectroscopy (Marcel Dekker, 1995) along with a chapter in Max Houck’s Mute Witnesses: Trace Evidence Analysis (Academic Press, 2001). He continues to be a fellow of the Criminalistics Section of the American Academy of Forensic Sciences and is a member of the national Scientific Working Group for Material Analysis (SWGMAT), serving as chairman of the paint subgroup from 1995 to 2005. Consistent with his current casework duties, he is actively involved in expanding reference collections and databases dealing with the types of materials encountered in casework, such as the Paint Data Query (PDQ) database, glass databases, and the Spectral Library Identification and Classification Explorer (SLICE) database.

B.S. Chemistry, Lebanon Valley College, Annville, PA 1971


30+ Years Experience

Tom Schaefer taught Biology, AP Biology, Environmental Science and Life Science for 33 years in the Waukesha Public Schools. He has degrees in Biology, Computer Science, and Draft Technology with additional credits in Writing, and Curriculum Development. In 2000 Tom was invited to take part in a National program to introduce Digital Microscopy into the secondary and post-secondary science classroom. Tom earned a reputation as an “expert” and is recognized as such nationwide. After retiring Tom joined the McCrone Group where he continues to teach courses in microscopy.

B.S. Biology with minors in education and coaching, Carroll College, Waukesha, WI, 1982
MS Computer science with emphasis in education, Cardinal Stritch University, Milwaukee, WI, 1997


Adjunct Instructor

20+ Years Experience

In 1995, Bill started Microvision Northwest-Forensic Consulting, Inc., where he is the President and principal forensic microscopist, consulting on both criminal and civil forensic cases. Bill is also an instructor at the California Criminalistics Institute (Sacramento, CA) teaching “Basic Practical Microscopy and Identification of Building Materials.”

Bill has been employed by the Washington State Patrol Crime Laboratory in Spokane, WA. as a forensic microscopist since 1990 where he is responsible for the identification and interpretation of a wide range of materials including hairs, fibers, soil, minerals, building materials, glass, paint, explosives, wood, paper, botanical traces, metals, and food traces. His analysis relies on the use of polarized light microscopy in conjunction with electron microscopy and infrared spectroscopy.

From 1987 to 1990, Bill was the coordinator of the Materials Characterization Section of McCrone Environmental Services (Atlanta, GA) specializing in asbestos-containing product identification.

Bill is a member of the American Academy of Forensic Sciences, a Diplomate of the American Board of Criminalistics, a member of the Northwest Association of Forensic Scientists, and the California Association of Criminalistics; and serves on the FBI’s Scientific Working Group for Materials Analysis (SWGMAT). His publications include articles on paleontology, sedimentary geology and forensic microanalysis.

B.S. Allied Health Science, Georgia State University, Atlanta, 1978
B.S. Geology, Georgia State University, Atlanta, 1983
M.S. Geology, Eastern Washington University, Cheney, 1986



27+ Years Experience

Elaine has been a Senior Research Scientist with McCrone Associates since 2001, where she applies transmission electron microscopy techniques, including high resolution imaging, electron diffraction, x-ray microanalysis, and electron energy loss spectroscopy, to a wide variety of materials. Consulting work for clients in industry and academia has included characterization of polymer nanocomposites, medical devices, pharmaceuticals, minerals, ceramics, and metallurgical specimens.

Prior to joining McCrone, Elaine worked for 21 years at the UOP Research Center in Des Plaines, Illinois. Her career there included positions as Research Chemist, Analytical Supervisor and Analytical Specialist in Electron Microscopy. Microscopy experience included use of dedicated STEM, TEM, and LV-SEM to study zeolites, supported metal catalysts, filamentous carbon, and novel mixed metal oxides. She was also named as co-author on several patents.

B.S. Chemistry with honors, Elmhurst College, 1988

Craig S.Schwandt, Ph.D.


20+ Years Experience

Craig, Director of Industrial Services and Senior Research Scientist, joined the electron optics group at McCrone Associates, Inc. in 2007. He currently specializes in X-ray microanalysis of particles using energy and wavelength dispersive spectrometry methods with the scanning electron microscope and electron microprobe. Craig has extensive and diverse analytical capabilities developed with extensive petrologic and mineralogic research. These include, among others, optical microscopy, X-ray diffraction analysis, electron microscopy, X-ray spectrometry. He began acquiring his experience working for the Wisconsin Geological and Natural History Survey. He was the first geosciences post-doctoral appointee at Sandia National Laboratories. Subsequently he was a National Research Council Associate at Johnson Space Center where he continued as a contractor support scientist with the Office of Astromaterials Research, until joining McCrone Associates, Inc.

Ph. D., Geology, South Dakota School of Mines and Technology, 1991
M. S., Geology, University of Missouri – Columbia, 1988
B. S., Geology and Geophysics, University of Wisconsin – Madison, 1984

J. JeffSchwegman, Ph.D.

Adjunct Instructor

15+ Years Experience

J. Jeff Schwegman, Ph.D. is currently a cofounder and chief scientific officer of BioConvergence LLC where he specializes in formulation, process, and analytical development of new molecular entities. Dr. Schwegman received his BS in Biochemistry from Indiana University in 1992 and began working at Cook Imaging in Bloomington Indiana, where he gained experience in analytical, formulation and process development. In 1999 he began graduate study in the Department of Industrial and Physical Pharmacy at Purdue University under the direction of Dr. Steve Nail, where his focus of research involved studying changes in the physical structure of biological molecules during lyophilization. Dr. Schwegman received his Ph.D. from Purdue University in 2003, and returned to Bloomington where he worked at Baxter Pharmaceutical Solutions as a Research Scientist in the Pharmaceutical Development group. He routinely lectures around the world on formulation, stabilization and process development of lyophilized products. He has also been an active member of AAPS since 2001.

B.S. Biochemistry, Indiana University, Bloomington, Indiana, 1992.
Ph.D., Purdue University, West Lafayette, Indiana, 2003

Gretchen L.Shearer, Ph.D.


17+ Years Experience

Gretchen has been a Senior Research Chemist with McCrone Associates since 1995. Dr. Shearer came to McCrone Associates following her Ph.D. in Archaeological Chemistry from the University of London and a fellowship at the Metropolitan Museum of Art.

She is responsible for chemical analysis using infrared spectroscopy, Raman microspectroscopy, gas and liquid chromatography, polarized light microscopy and microchemical techniques. She has problem solving experience in a wide variety of industries including pharmaceutical, paints and coatings, electronics, forensic, polymers and metals. Types of projects include identification of surface defects and adhesion failures in automotive and other paints, identification of foreign matter in pharmaceutical products, analysis of contaminants in petroleum products, and evaluation of coatings/corrosion/stains on metal surfaces. Other chemical analyses involve polymer and ink outgassing and residual solvent analysis. Her research interests are in art and archaeological materials identification and conservation research.

L.W. Frohlich Research Fellow, Metropolitan Museum of Art, Department of Objects Conservation, New York, New York, 1988-1990.

Ph.D. Archaeology, University of London, 1989
B.A. Chemistry, College of Wooster, Wooster, Ohio, 1985 (Phi Beta Kappa, 1984)

Mary L.Stellmack


30+ Years Experience

Mary has over 30 years of consulting and analytical service experience, with particular specialization in plastic and polymer analysis, and identification of contaminants in pharmaceutical and industrial products. Mary is currently a Senior Research Chemist at McCrone Associates, where she utilizes light microscopy, infrared and Raman spectroscopy, gas and liquid chromatography, and micro-analytical methods for materials analysis. Prior to joining McCrone Associates, she served as Vice President of Analytical Services for Bodycote Broutman, Inc. (formerly L.J. Broutman & Associates), a consulting company specializing in contract testing and R&D for the plastics industry. She has served on the board of directors of the Chicago Section of the Society for Plastics Engineers, and is also a member of the Society for Applied Spectroscopy, the American Chemical Society, and the American Association of Pharmaceutical Scientists. Mary's research interests include development of new techniques for isolation and analysis of contaminants in various products.

B.S., Chemistry, Northeastern Illinois University, 1979
B.S., French, Northeastern Illinois University, 1979
M.S., Analytical Chemistry, Loyola University, Chicago, Illinois, 1982

Scott F.Stoeffler


25+ Years Experience

Scott came to McCrone Associates from the Michigan State Police in 1997. He is responsible for microscopical and chemical analysis and identification of small particles and trace materials in industrial samples including pharmaceuticals, foods, fabrics, dusts, polymers, glass and other manufactured products, as well as forensic samples in criminal investigations and civil litigation. He was a Laboratory Scientist with the Michigan Department of State Police Forensic Science Division from 1986-1997, where his duties included chemical and microscopical analysis of trace evidence, including fibers, paint, glass and explosive residue, footwear and tire track examinations, crime scene investigations and courtroom testimony. He currently serves on the Fiber Subgroup of the Scientific Working Group for Materials Analysis (SWGMAT), and is a member of the American Society of Trace Evidence Examiners (ASTEE) and the Midwestern Association of Forensic Scientists (MAFS)

M.S. Forensic Chemistry, Northeastern University, 1986
B.S. Chemistry with honors, University of Michigan, Ann Arbor, 1983

Adjunct Instructor

25+ years

Phil Sumida is a National Board-certified physics teacher at Maine West High School in Des Plaines. He is a founding and associate member of the National Academy of Sciences' Teacher Advisory Council, and was a finalist for the 2005 Presidential Award for Excellence in Math and Science Teaching.

B.S. University of IL, Urbana-Champaign, IL, 1993
M.S. Northern IL University, DeKalb, IL, 2001

Joseph R.Swider, Ph.D.


20+ Year Experience

Joe joined McCrone Associates from the Freer Gallery of Art at the Smithsonian Institution. He has over twenty years of chemical instruction, analytical instrumentation, and research across chemical disciplines including organic, inorganic, analytical, and nuclear. He effectively applies his experience to managing multiple and multifaceted research projects and performing microanalytical services for museums and scientific institutions. Projects under his direction include a diverse group of samples including auto parts, wine, sports equipment, drawing materials, painting materials, oncology pharmaceuticals and explosives. His past experience includes: Senior Research Scientist – Andrew W. Mellon Foundation East Asian Paintings Research Program, Freer Gallery of Art/Arthur M. Sackler Gallery, Smithsonian Institution, Washington, DC; and National Research Council Postdoctoral Fellow, National Institute of Standards and Technology, Surface and Microanalysis Science Division, Gaithersburg, MD.

Ph.D. Nuclear Chemistry, University of Maryland, College Park, MD, 1998
B. S. Chemistry, Minor - Art History, University of Rochester, Rochester, NY, 1991

Anna S.Teetsov


50+ Years Experience

Anna has worked as a Senior Research Microscopist at McCrone Associates since 1961. In addition to her international reputation for the development of special techniques for ultramicroscopical analysis of particles, over the past four decades she has worked as an analyst on thousands of projects requiring the isolation and identification of submicrometer-sized contaminants. Anna, a co-author of the Particle Atlas, has published widely in the area of particle manipulation techniques and is responsible for the development of the curriculum for the particle handling course.

Her special skills include the microscopical analysis of particles in micrometer and submicrometer size ranges; manipulation and mounting of particles for instrumental analysis; development of special techniques for ultramicroscopical analysis of particles. Anna has been developing and teaching the Particle Isolation course for over 19 years.

B.S. Chemistry, Illinois Institute of Technology, Chicago, Illinois, 1958

Heidi M.Ullberg


25+ Years Experience

Heidi joined McCrone Associates' cleanroom staff in 1997 after many years of clinical and medical laboratory practice. Heidi's current responsibilities as Senior Research Microscopist include micrometer and submicrometer-sized particle manipulation related to her work with environmental forensic samples; and she applies the same techniques to a wide variety of industrial samples including pharmaceuticals, foods, fabrics, dusts, polymers, and glass. Heidi rounds out her duties at McCrone Associates by serving as Chair of the Safety Committee where she has been trained in the management of hazardous waste compliance as required by the USDOT, EPA and OSHA. Heidi also serves as a member of the Quality Assurance Unit. Her experiences as an instructor at the Rush Medical College (Chicago) School for Medical Technology provide a valuable foundation for her responsibilities at Hooke College of Applied Sciences.

B.S., Biology, Southern Illinois University at Edwardsville, 1988
A.A.S. Medical Laboratory Technology (MLT, MT-I, ASCP) Belleville Area College, 1986

Thomas G.Van Howe, Jr.


19+ Years Experience

Tom joined The McCrone Group in 2007 bringing with him microbiology, microscopy, and industrial hygiene and safety experience. Prior to joining The McCrone Group, Tom served five years as an analyst in the Wet Chemistry and Microbiology departments of an environmental laboratory and nine years as the Technical Manager for an ISO 17025 accredited industrial hygiene and asbestos laboratory. He has extensive experience with water and soil examination, indoor air quality studies, mold spore and pollen identification, asbestos analyses and unknown airborne particulate identification. His microscopy specializations are in phase contrast microscopy, polarized light microscopy and transmission electron microscopy with energy dispersive x-ray spectroscopy. Tom currently serves The McCrone Group as Quality Manager for McCrone Associates, Instructor for Hooke College of Applied Sciences, and Safety Manager for The McCrone Group. His primary responsibility includes oversight of corporate compliance with regulatory and accreditation agencies. He also serves as an American Heart Association certified Basic Life Support instructor.

B.S., Biology, Millikin University, Decatur, IL. 1993

Kristen D.Wiley


12+ Years Experience

Kristen gained her initial experience in a food microbiology laboratory. Since joining McCrone Associates as a research microscopist in 2000, she has contributed her special skills to the handling and manipulation of fine particles, sometimes particles as small as a few hundred nanometers. As a result of research conducted in association with Chicago's Brookfield Zoo, some of her work on animal hair microscopy can be found at www.modernmicroscopy.com. Kristen has also been responsible for some of the photomicrography for McCrone's Atlas of Microscopic Particles (www.mccroneatlas.com)

B.S., Biology, Lewis University, Romeoville, IL 1999
Field Marine Science, Cornell University, 1996


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