Lester asked about the requirement for the additional grab iron on the left side of cars. The information is in the archives; messages 60307, 88153 and probably several others.
From the Interchange rules:
Rule 3, Section (s) Note (2) Safety Appliances: Additional grab iron on
side of car at end opposite side ladder, in accordance with A.R.A. Standard
location, required on all house cars, hopper cars, and high side gondola cars
built new or rebuilt on or after August 1, 1933. From owners.
Note. -- it is recommended that when house cars, hopper cars and high side
gondola cars built new or rebuilt prior to August 1, 1933, receive Class I
general repairs, additional grab irons as specified above be applied.