5. Operating assets

Property, plant and equipment used in business activities for the
Company and its subsidiaries

As of March 31, 2012, property, plant and equipment used in business
activities can be summarized as below:

+---------------------+------------+-----------+----------------------+
| Type of Asset       | P          | Book      | Obligation           |
|                     | roprietary | Value     |                      |
|                     | right      |           |                      |
|                     | /ownership | (Baht     |                      |
|                     |            | million)  |                      |
+=====================+============+===========+======================+
| 1. Land and land    | Ownership  | 856.61    | See detail by each   |
| improvement         |            |           | Company              |
+---------------------+------------+-----------+----------------------+
| 2. Buildings and    | Ownership  | 1,967.90  | See detail by each   |
| structures          |            |           | Company              |
+---------------------+------------+-----------+----------------------+
| 3. Machinery and    | Ownership  | 6,496.73  | See detail by each   |
| Equipment           |            |           | Company              |
+---------------------+------------+-----------+----------------------+
| 4. Work in progress | Ownership  | 103.94    | See detail by each   |
|                     |            |           | Company              |
+---------------------+------------+-----------+----------------------+
| 5. Others           | Ownership  | 61.98     | See detail by each   |
|                     |            |           | Company              |
+---------------------+------------+-----------+----------------------+
| Total               |            | 9,487.16  |                      |
+---------------------+------------+-----------+----------------------+

Details of operating assets can be categorized by each Company as
follows:

Tata Steel (Thailand) Public Company Limited (“TSTH”)

+----------------------+-------------+-----------+--------------------+
| Type of Asset        | Proprietary | Book      | Obligation         |
|                      | righ        | Value     |                    |
|                      | t/ownership |           |                    |
|                      |             | (Baht     |                    |
|                      |             | million)  |                    |
+======================+=============+===========+====================+
| 1. Work in progress  | Ownership   | -         | - None -           |
+----------------------+-------------+-----------+--------------------+
| 2. Others            | Ownership   | 22.65     | - None -           |
+----------------------+-------------+-----------+--------------------+
| Total                |             | 22.65     |                    |
+----------------------+-------------+-----------+--------------------+

N.T.S. Steel Group Public Company Limited (“NTS”)

  ----------------------------------------------------------------------------
  Type of Asset           Proprietary       Book Value   Obligation
                          right/ownership   (Baht        
                                            million)     
  ----------------------- ----------------- ------------ ---------------------
  1. Land and land        Ownership         856.61       Mortgaged
  improvement                                            

  2. Buildings and        Ownership         1,587.01     Mortgaged
  structures                                             

  3. Machinery and        Ownership         5,970.19     Mortgaged
  Equipment                                              

  4. Work in progress     Ownership         26.62        - None -

  5. Others               Ownership         29.12        - None -

  Total                                     8,469.55      
  ----------------------------------------------------------------------------

The Siam Iron and Steel (2001) Company Limited (“SISC”)

  --------------------------------------------------------------------------
  Type of Asset               Proprietary       Book Value   Obligation
                              right/ownership   (Baht        
                                                million)     
  --------------------------- ----------------- ------------ ---------------
  1. Land and land            Ownership         0.00         - None -
  improvement                                                

  2. Building and structures  Ownership         51.95        Mortgaged

  3. Machinery and Equipment  Ownership         139.87       Mortgaged

  4. Work in progress         Ownership         5.58         - None -

  5. Others                   Ownership         4.45         - None -

  Total                                         201.85        
  --------------------------------------------------------------------------

  The Siam Construction Steel Company Limited (“SCSC”)

  --------------------------------------------------------------------------
  Type of Asset               Proprietary       Book value   Obligation
                              right/ownership   (Baht        
                                                million)     
  --------------------------- ----------------- ------------ ---------------
  1. Land and land            Ownership         0.00         - None -
  improvement                                                

  2. Building and structures  Ownership         328.93       Mortgaged

  3. Machinery and Equipment  Ownership         386.67       Mortgaged

  4. Work in progress         Ownership         71.73        - None -

  5. Others                   Ownership         5.76         - None -

  Total                                         793.09        
  --------------------------------------------------------------------------

  Remark : Land, building and structures and Machinery of subsidiaries,
  which are NTS, SISC and SCSC, were mortgaged to secure borrowings from
  Bangkok Bank Public Company Limited and Siam Commercial Bank Public
  Company Limited with secured value of Baht 2,980 million and Baht
  6,120 million, respectively. Land, building and structures and
  Machinery of Mini Blast Furnace of NTS were mortgaged to secure
  borrowings from Bangkok Bank Public Company Limited and Siam
  Commercial Bank Public Company Limited with secured value of Baht
  1,750 million and Baht 1,750 million, respectively.