| References | [<ExternalResource: Powerhouse Museum, ''Screw Bolt' mining rock bolt', Powerhouse Museum, Sydney, NSW.>, <ExternalResource: Powerhouse Museum, '96/383/2 Rock bolts, prototypes (2), test materials (2) and hollow bar samples (2), 'The Screw Bolt', 'Powerhouse Museum Selection 1995', steel/concrete, Dr Peter Gray, BHP Engineering Pty Ltd, Wollongong, 1993-1995', Powerhouse Museum, Sydney, NSW.>] | [<ExternalResource: Powerhouse Museum, ''Screw Bolt' mining rock bolt', Powerhouse Museum, Sydney, NSW.>] | 
                
                                        
                    
                        | Related works | 
                            
                                'Screw Bolt' mining rock bolt (None)96/383/2 Rock bolts, prototypes (2), test materials (2) and hollow bar samples (2), 'The Screw Bolt', 'Powerhouse Museum Selection 1995', steel/concrete, Dr Peter Gray, BHP Engineering Pty Ltd, Wollongong, 1993-1995 (None) | 
                            
                                'Screw Bolt' mining rock bolt (None) |