Hi nael:
I remembered the thread Useful site (last reply on 09-09-2011) [link Point to another website Only the registered members can access]
I checked the site mentioned there and found that you can download the books you still need.
Investigating chemical process incidents
Guidelines for writing effective operating and maintenance procedures
Explosion hazards in the process industry
For each title you will encounter more than one option (mirror) for downloading. I´m sure that you will find that it is very easy to use.
Just have to write down a title in the search box and you will see the results.
Regards
Bookmarks