Union Pacifics - Operations Managment Titles?

Question

UP (and other roads) have changed the titles of many of their operations management positions over the years.

Trainmasters became Managers of . . . ?
Road Foremen of Engines became ____?
Terminal Superintendents became ____?
Asst. Division Supers became ____?
Division Supers became ____?
Divisions became service units.

i.e. SYO, MTO, MOP, MYO, MIO, SMTO, SMOP, DRO, DTS
(not certain what many of these stand for, and/or what old title they correspond to)

Some service units seem to have General Supers, while others just have Supers. The terms MANAGER and DIRECTOR seem to have become very popular.

Basically I would like to know what each of the management operations positions are now called, and what is they're hierarchy (who reports to whom)?

I know I asking a lot. Thanks!

oubrioko

Answer 1

MTO, Manager Train Operations, was the Trainmaster.

The Road Foreman of Engine became the MOP, Manager of Operating Practices.

Not sure, but SYO could be Super Yard Operations, the old Yardmaster.

The others I don't recognize.

Answer 2

SYO=supervisor yard operations. a position a bit short of MYO