When handling major incidents, what all the information can an Incident Manager obtain which inturn will be helpful in driving a problem record ?

A standard platform of an incident report should be established that would contain:

-Problem statement (title)

-Facts and data (activities at the time)

-Impact (machine or human)

-Event log (exact timing of event)

-Root cause analysis (or suspected root cause at least)

-Containment action (at the point of time)

-Preventive action (for future prevention)

-Closure and effectiveness (of actions taken) 

Usually a report is generated within the first48Hrs, closure should be only when our actions are effective a week to a few months later.

Mistakes happen when companies close incidents in a hurry to save some points in their KPI, which in my opinion it's not the best when you are really trying to prevent a reoccurrence.

There should a proper record of all incidents and at least, a yearly review.

Initially all available information can not be ignore, time, location, incident area, casualty and most important is the witness interview so we can summarize all that in fact finding  

all necesary data about the incident like reasons , time , expectations.