Harmony Gold Mining Company Ltd - A Significant Improvement For                 
                                  Harmony"s Golpu / Wafi Resource               
Harmony Gold Mining Company Ltd                                                 
Incorporated in the Republic of South Africa                                    
Registration number: 1950/038232/06                                             
Share code: HAR                                                                 
ISIN: ZAE000015228                                                              
A SIGNIFICANT IMPROVEMENT FOR HARMONY"S GOLPU / WAFI RESOURCE                   
Harmony Gold Mining Company Limited (NASDAQ, NYSE: HMY; JSE: HAR) today         
announced that it has upgraded the new resource model for it"s Wafi gold and    
Golpu copper gold deposits in the Morobe Province of PNG.                       
The combined resource is now 9.2m ounces gold and 3.563 billion pounds of       
copper. (1.6m tonnes)                                                           
GOLPU                                                                           
The revised Golpu model takes into account 2,100m of diamond core drilled since 
the last resource calculation. This data has led to an improved understanding of
the porphyry alteration assemblages and identified consistent mineralisation in 
the surrounding metasediment. The revised model uses the alteration assemblages 
to distinguish separate resource model domains.                                 
Golpu (copper, gold, moly)                                                      
Resource   Cutoff Mt      Cu     Au     As      Mo     Cu      Cu     Au        
Category   g/t            %      g/t    g/t     g/t    Metal   Metal  Moz       
                                                       M lb    Kt               
Indicated  0.0    87.5    1.36   0.63   419     11     2,615   1,186  1.8       
Inferred   0.0    59.2    0.73   0.49   308     161    948     430    0.9       
Total             147.0   1.10   0.57   374.0   131.0  3,563   1,616  2.7       
The previous model contained 96Mt @ 1.4% Cu and 0.7g/t Au for 1.35Mt contained  
copper and 2.0Moz contained gold (all Indicated).                               
This new resource represents an increase in copper of 266,000t (20%) and an     
increase in contained gold of 700,000oz (35%).                                  
Additionally, the average arsenic grade has dropped from 488g/t to 374g/t.      
Arsenic inclusion is limited to the top 20% of the orebody and as such should be
able to be excluded from the Block Cave mine plan in the case that ongoing      
metallurgical testwork is unsuccessful in defining a process to handle the      
deleterious element.                                                            
The exploration team is now investigating the work required to convert the      
metasediment resource to the Indicated category and further define the porphyry.
WAFI                                                                            
An updated model for the Wafi gold resources has also been completed. This model
confirms the robustness of the high grade Link Zone. A less selective method was
adopted for the Non Refractory Gold (NRG) zone, A and B Zones and the Golpu     
Goldcap Zone resulting in a more robust model containing additional ounces, but 
at a lower grade than previously reported.                                      
Wafi (gold)                                                                     
                    Indicated       Inferred        Total                       
            Cutoff  Mt      Au      Mt      Au      Mt      Au      Au          
            g/t             g/t             g/t             g/t     Moz         
Link Zone   0.8     4.3     8.57    0.5     6.53    4.8     8.35    1.3         
Non-        0.8     8.1     1.46    9.4     1.86    17.5    1.68    0.9         
Refractory                                                                      
Zone                                                                            
A and B     0.8     51.7    1.45    31.0    1.69    82.8    1.54    4.1         
Primary                                                                         
Zone                                                                            
Golpu       0.8     3.0     1.25    1.6     1.18    4.6     1.22    0.2         
Goldcap                                                                         
Total Wafi          67.0    1.90    43.0    1.80    110.0   1.90    6.5         
The Golpu and Wafi resource models have been reviewed and endorsed by mining    
consultancy RSG Global.                                                         
This additional resource inventory has significant potential to positively      
impact the economical robustness of the Wafi / Golpu project. The Golpu project 
is currently under pre-feasibility, due for completion in Quarter 1, 2007.      
The surrounding area remains highly prospective for additional epithermal gold  
and porphyry copper gold resources. An exploration budget of R20 million has    
been allocated over and above the pre-feasibility budget to test these targets. 
The estimate of Mineral Resources in this statement was prepared in accordance  
with the standards set out in the "Australian Code for Reporting of Exploration 
Results, Mineral Resources and Ore Reserves - The JORC Code" (December 2004) as 
published by the Joint Ore Reserve Committee of the Australian Institute of     
Mining and Metallurgy, Australian Institute of Geoscientists and Mineral Council
of Australia (JORC).                                                            
The Ore Resource data in the summary table is based on information compiled by  
Gregory Job who is a corporate member of the Australian Institute of Mining and 
Metallurgy and who has relevant experience of a "competent person" as defined by
the code for reporting of Mineral Resources and Ore Reserves in relation to the 
mineralisation being reported on.  Mr Job is a full time employee of Harmony    
Gold.                                                                           
Golpu resources have been reported in their entirety within the interpreted     
wireframes.                                                                     
The Wafi resources have been reported to a cuttoff grade of 0.8g/t Au that fall 
within the interpreted wireframes.                                              
Issued by Harmony Gold Mining Company Limited                                   
For more details contact:                                                       
Bernard Swanepoel                                                               
Chief Executive                                                                 
on +27(0)83 303 9922                                                            
Or Philip Kotze                                                                 
Executive, Investor Relations                                                   
on +27(0)83 453 0544                                                            
Johannesburg                                                                    
11 July 2006                                                                    
Date: 11/07/2006 05:54:33 PM Supplied by www.sharenet.co.za                     
Produced by the JSE SENS Department