Glenn Hamburg	7691 Bridgeway Dr. ; Temperance, MI 48182
gwhmbrg@cs.com	phone: 734-847-3871

Glenn was my supervisor at Teledyne CAE for the first several years that I worked at that company. After a reorganization, I worked closely with Glenn to develop several high technology bearing products and a high performance counter-rotating propfan gearbox. Since Glenn retired (more than 10 years ago), we have stayed in touch, helping each other out by sharing our collective knowledge.

Tedric Harris	The Pennsylvania State University; Mechanical Engineering Building ; 320 Leonhard Bldg. ; University Park, PA 16802-1412
tah10@psu.edu	phone: 814-863-6285

Ted Harris is a well known author who has held many high level management positions at SKF. Ted currently is an Associate Professor at Penn State University. I worked with Ted Harris on many Aerospace bearing development projects when I worked at both Teledyne CAE (1982-1989) and General Electric Aircraft Company (1989-1991). When I worked at NTN (1991-2002), I worked with Ted Harris on multiple technical papers, on two projects for the US Navy and as a member of the Life Ratings for Modern Rolling Element Bearing (LRMRB) committee associated with ASME.

Mary-Jo Liston	10488 Rosaltha Drive; Whitmore Lake, MI 48189
mjliston@chartermi.net	phone: 734-449-8140

Mary-Jo and I were Supervisors at the NTN Technical Center. We worked closely together (1991 - 2002) on many projects that included the development of DLC coatings for enhanced life bearings and on ultra-high life taper roller bearing designs.

Mark Ragen	SKF Aerospace MRC Bearings ; 402 Chandler St. ; Jamestown, NY 14701
Mark.A.Ragen@skf.com	phone: 716-661-2358

I have known Mark for almost 20 years. Mark and I worked together to install the SHABERTH computer code at both Teledyne CAE and General Electric Aircraft Engines. When I was the technical leader of the GE90 bearing development program, Mark was a co-worker who helped me complete the bearing analysis portion of the program. Mark and I have worked on several technical paper reviews over the past 5 years to help me as an Associate editor for STLE's Tribology Transactions publication.

Mark Warner	GKN Automotive, Inc. ; 3300 University Drive ; Auburn Hills, MI 48326-2362
mark.warner@us.add.gknplc.com	phone: 248-377-1207

Mark is a senior manager at GKN. When I worked at General Electric Aircraft Engines (1989-1991), I worked closely with Mark to develop high technology bearings for the GE90 engine. Mark was a Project Engineer at GEAE and played a key role in making sure that all analytical groups worked together. We both worked at NTN for a couple of years in the early 1990s. At that time, Mark was an Engineering Manager and a Sales Engineer.

Erwin Zaretsky	NASA Glenn Research Center M/S 23-3 ; 21000 Brookpark Rd. ; Cleveland, OH 44135-3191
Erwin.V.Zaretsky@LERC.NASA.GOV	phone: 216-433-3241

Erv is the Chief Engineer of Structures at NASA Glenn Research Center. We have never been co-workers, but we have worked together on multiple high technology bearing development projects as well as on technical papers for 20+ years (1982 - 2004).