I would like to know how to build a clean room for hard drive data
recovery purposes.
I would like to know the procedure of building it,
the equipment i'll need and as much information on the actual work proccess.
data recovery performing in a clean room done for hard drive that is
physically damage with an internal problem.
the only way to recover data from those hard drives is to physically
open them and do the "work".
i want to know what kind of "work" is exaclly done in order to
retrive/read the data and what kind of equipment needed.

My guess.
Clean outside of said hd to remove dirt dust, grease oil what ever.
Now for the other thing.  I wonder if this would work.
Plastic large clear thick plastic  bag very clean. 
Glue bag inside a box stratch top flat so you can see inside.
Glue a flange for vacum hose, and glue two golves into the side of the bag.
Place hd and tools needed to open and another hd of the exact same type inside.
Turn on vacum ,run for some time period  using the tools remove the hd
media replace it in the second good hd .
Remove hd from bag place in system running software to access or image that drive. 

If that does not work remove hd media then take box to clean area , to
open then  view data using other methods perhaps electron microscope.

You can get some basic info by using this search string:

data recovery "clean room"

For instance:

Clean Room Data Recovery
http://www.harddriverecovery.org/clean_room.html

Seems you'd need to talk to one of the specialized contracters
mentioned on that page to find out how to build a Clean Room to meet
the criteria necessary to become certified.

You might find this helpful:

How to build a Clean Room.
http://www.pilair.com/English/Productline/CleanRoom/How01.htm

As far as the rest of your question, I wish you luck.