50 Years
- Ronald L Westlake
- Gregory A Peterson
- David T Owen
- Larry J Moore
- John B Brommel
51 Years
- Fred A Thomas
- Richard F Tedrow
- Charles J Stephenson
- William W Diehl
- Vannard E Christiansen Jr
- James D Boller
52 Years
- Timothy H Wilson
- Jon R Turner
- George C Skalicky Jr
- Gary R Parkin
- Terry T Baal
- Robert D Anderson
- Charles B Chervek
53 Years
- Willie H Williams
- Richard L Upchurch
- Francis W Segar
- Gerald A Beglau
54 Years
- Ron Wilkerson
- Richard D Sturtz
- Ronald D Miklus
- Frank J Kaufmann Jr
55 Years
- Michael J Murphy
- Melvin Mitchell
- Thomas A Lindsay
- Leon V Jolin
- Sydney R Guest Jr
56 Years
- Michael V Wilde
- Bernard A Smith
- Ronald J Merryfield
- Kenneth E Laver
- David L Kooker
- Wayne L Cole
- Robert A Bell
57 Years
- Harry F Wertz Jr
- John R Tschantz
- Maynard M Mettler
- Dennis D Martin
- Rex L Kehoe
- George L Dickerson
- John H Chamberlain
- Donald G Chamberlain
- Paul R Anderson
58 Years
- Garrett J Osborne
- Danny H Moore
- Peter F Hodak
59 Years
- Donald R Williams
- Gerald L Starrett
60 Years
- Richard L Thornton
- James Randall Sr
- Robert E Patterson
- Jon H Miklus
- James S Carlisle
61 Years
- Marvin E Franke
- David J Claussen
- Thomas R Brees
- Bernard J Ermels
62 Years
- Donald D Sullivan
- David A Miller
- Paul L Kilzer
- Norman D Fuller Jr
- Charles W Erickson
63 Years
- James J Holland
- John A Hammond
- Cecil D Goforth
- John P Dorrian
- John L Burch
64 Years
- Edward L McElroy
- Marvin L Cole
65 Years
- William D Hickman
- Gayle A Dewinter
- Richard D Coe
66 Years
- Kenneth M Thomas
- Theodore J Storm
- Craig Q Burchfield
67 Years
- Bruce P Skidmore
- Howard W Robbins
- Joseph R Cardwell
- Patrick J Fisher
73 Years
- Elmore L Titus
74 Years
- William F Miklus
