Lawyers said the verdicts handed down in Mumbai Thursday by Judge Shalini Phansalkar Joshi came just seven months after the complaints were filed, the Times of India reported.
The cases involved a photojournalist who was assaulted and gang raped while on assignment at the closed mill last year and a 19-year-old telephone operator who was attacked while as she was taking a short cut to a railway station with her boyfriend.
The two cases that were tried simultaneously. Three accused were defendants in both cases.
The newspaper said the two juveniles would be tried April 1. They are charged in both off the gang-rape cases.