You should plan to attend the coking.com seminar. It is a great way to get DCU information from operations and engineering personnel.
Also, the discussion forum is filled with valuable information. You can get to know people before the seminar.
Below is a link to a document you might find useful.
http://www.fwc.com/publications/tech_papers/files/Petcoke_Quality_May08.pdf
Regards,
CG
