51 Years
- Jerry L Whisler
- Gerald E Rudd
- Dennis L Reeves
- Larry E Perisho
- Thomas E McElroy
- Mark S McCoun
- Mark J Lutter
- Ronald W Lane
- Roy M Jones
- Thomas W Guest
- Thomas F Gillespie
- Neil W Evans
- Wayne W Davidson
- Lee F Crandall
- Jerry A Cairns
- Ricky D Bohl
- Larry B Anderson
52 Years
- David M Wooster
- Allen W Wagner
- Jeffry M Turner
- Robert W Rahto
- Gary D Petersen
- Lyall W Parker
- Keith M Murphy
- Randy G Miklus
- Thomas C Krauthoff
- Robert E Jackson Sr
- Ronald L Westlake
53 Years
- Gregory A Peterson
- Larry J Moore
- John B Brommel
54 Years
- Richard L Upchurch
- Fred A Thomas
- Richard F Tedrow
- Charles J Stephenson
- George C Skalicky Jr
- Gary R Parkin
- Vannard E Christiansen Jr
- Terry T Baal
- James D Boller
55 Years
- Willie H Williams
- Jon R Turner
- Francis W Segar
- Robert D Anderson
- Gerald A Beglau
- Charles B Chervek
56 Years
- Ron Wilkerson
- Richard D Sturtz
- Ronald D Miklus
- Frank J Kaufmann Jr
57 Years
- Michael J Murphy
- Sydney R Guest Jr
58 Years
- Michael V Wilde
- Bernard A Smith
- Bruce P Skidmore
- Ronald J Merryfield
- Thomas A Lindsay
- Kenneth E Laver
- David L Kooker
- Wayne L Cole
- Robert A Bell
59 Years
- Harry F Wertz Jr
- John R Tschantz
- Maynard M Mettler
- Dennis D Martin
- John H Chamberlain
- Donald G Chamberlain
60 Years
- Rex L Kehoe
- Peter F Hodak
- Paul R Anderson
61 Years
- Donald R Williams
- Gerald L Starrett
- Garrett J Osborne
62 Years
- Robert E Patterson
63 Years
- Marvin E Franke
- David J Claussen
- James S Carlisle
- Thomas R Brees
64 Years
- Donald D Sullivan
- David A Miller
- Norman D Fuller Jr
- Charles W Erickson
65 Years
- Cecil D Goforth
66 Years
- Edward L McElroy
- James J Holland
- John A Hammond
67 Years
- William D Hickman
- Marvin L Cole
- Gayle A Dewinter
68 Years
- Kenneth M Thomas
- Theodore J Storm
- Craig Q Burchfield
69 Years
- Howard W Robbins
- Patrick J Fisher
70 Years
- Melvin Mitchell
75 Years
- Elmore L Titus
76 Years
- William F Miklus
