http://www.rediff.com/news/2003/jan/08spec.htm
A few years ago, I had the opportunity to meet the Tibetan Dapon responsible for the operation, but he was unwilling to speak except in general terms.
An Indian web site [Bharat Rakshak] provides more information on the SFF's achievements in Bangladesh: 'With war right around the corner, the SFF was given several mission plans, including the destruction of the Kaptai Dam and other bridges. The Inspector General urged that the SFF be used to capture Chittagong, but this was found not favourable, since SFF members did not have artillery or airlift support to conduct a mission of that magnitude. After three weeks of border fighting, the SFF divided its six battalions into three columns and moved into East Pakistan on 03 December 1971.'