The following url should serve you well in becoming aware of embargoes issued to customers you are shipping to/receiving from, shortlines, and railroads. This notification site will help you estimate when the product can be ship and/or delivered.
url to embargo site
https://aarembargo.railinc.com/epdb/public.do
url to signing up for embargo notifications
https://aarembargo.railinc.com/epdb/subscribeToEPDBAction.do?step=viewSubscriptionInstructionsForEmbargoes