Kaala Patthar (1979)
Kaala Patthar is a 1979 Indian Bollywood action/drama film. It was produced and directed by Yash Chopra. The story was written by Salim-Javed. This film is the fourth collaboration between Amitabh Bachchan, Shashi Kapoor and director Yash Chopra after the hugely successful Deewaar (1975), Kabhie Kabhie (1976) and Trishul (1978). However, this film did average business at the box office.[http://boxofficeindia.com/showProd.php?itemCat=185&catName=MTk3OQ
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