RDX, ammonium nitrate used in train blasts: ATS / Zee News, 17 Jul 2006

http://www.zeenews.com/znnew/articles.asp?aid=309663&sid=NAT
"Forensic examination into the July 11 Mumbai serial train blasts have revealed use of RDX, traces of ammonium nitrate and which was triggered possibly by a timer device. The investigations also led to detection of lubrication oil which could create black smoke and add to the confusion among passengers to trigger off a stampede and chocking among them, anti-terrorist squad (ATS) said here today. The results of the forensic tests took time as residual samples of explosives collected from the blasts spots were miniscule and forensic experts took a long time to reach to a conclusion. Forensic experts did not find traces of gelatine in any of the samples tested so far. Stating that investigations were at a critical stage, Raghuvanshi, without naming any organisation, said probe suggests that the blasts were engineered by elements "beyond borders" and executed with the help of local population."